diff --git a/lib/icinga/apievents.cpp b/lib/icinga/apievents.cpp
index bb791c3ee..ac8048af4 100644
--- a/lib/icinga/apievents.cpp
+++ b/lib/icinga/apievents.cpp
@@ -44,6 +44,15 @@ REGISTER_APIFUNCTION(SetEnableActiveChecks, event, &ApiEvents::EnableActiveCheck
 REGISTER_APIFUNCTION(SetEnablePassiveChecks, event, &ApiEvents::EnablePassiveChecksChangedAPIHandler);
 REGISTER_APIFUNCTION(SetEnableNotifications, event, &ApiEvents::EnableNotificationsChangedAPIHandler);
 REGISTER_APIFUNCTION(SetEnableFlapping, event, &ApiEvents::EnableFlappingChangedAPIHandler);
+REGISTER_APIFUNCTION(SetEnableEventHandler, event, &ApiEvents::EnableEventHandlerChangedAPIHandler);
+REGISTER_APIFUNCTION(SetEnablePerfdata, event, &ApiEvents::EnablePerfdataChangedAPIHandler);
+REGISTER_APIFUNCTION(SetCheckInterval, event, &ApiEvents::CheckIntervalChangedAPIHandler);
+REGISTER_APIFUNCTION(SetRetryInterval, event, &ApiEvents::RetryIntervalChangedAPIHandler);
+REGISTER_APIFUNCTION(SetMaxCheckAttempts, event, &ApiEvents::MaxCheckAttemptsChangedAPIHandler);
+REGISTER_APIFUNCTION(SetEventCommand, event, &ApiEvents::EventCommandChangedAPIHandler);
+REGISTER_APIFUNCTION(SetCheckCommand, event, &ApiEvents::CheckCommandChangedAPIHandler);
+REGISTER_APIFUNCTION(SetCheckPeriod, event, &ApiEvents::CheckPeriodChangedAPIHandler);
+REGISTER_APIFUNCTION(SetVars, event, &ApiEvents::VarsChangedAPIHandler);
 REGISTER_APIFUNCTION(AddComment, event, &ApiEvents::CommentAddedAPIHandler);
 REGISTER_APIFUNCTION(RemoveComment, event, &ApiEvents::CommentRemovedAPIHandler);
 REGISTER_APIFUNCTION(AddDowntime, event, &ApiEvents::DowntimeAddedAPIHandler);
@@ -65,6 +74,15 @@ void ApiEvents::StaticInitialize(void)
 	Checkable::OnEnablePassiveChecksChanged.connect(&ApiEvents::EnablePassiveChecksChangedHandler);
 	Checkable::OnEnableNotificationsChanged.connect(&ApiEvents::EnableNotificationsChangedHandler);
 	Checkable::OnEnableFlappingChanged.connect(&ApiEvents::EnableFlappingChangedHandler);
+	Checkable::OnEnableEventHandlerChanged.connect(&ApiEvents::EnableEventHandlerChangedHandler);
+	Checkable::OnEnablePerfdataChanged.connect(&ApiEvents::EnablePerfdataChangedHandler);
+	Checkable::OnCheckIntervalChanged.connect(&ApiEvents::CheckIntervalChangedHandler);
+	Checkable::OnRetryIntervalChanged.connect(&ApiEvents::RetryIntervalChangedHandler);
+	Checkable::OnMaxCheckAttemptsChanged.connect(&ApiEvents::MaxCheckAttemptsChangedHandler);
+	Checkable::OnEventCommandChanged.connect(&ApiEvents::EventCommandChangedHandler);
+	Checkable::OnCheckCommandChanged.connect(&ApiEvents::CheckCommandChangedHandler);
+	Checkable::OnCheckPeriodChanged.connect(&ApiEvents::CheckPeriodChangedHandler);
+	Checkable::OnVarsChanged.connect(&ApiEvents::VarsChangedHandler);
 	Checkable::OnCommentAdded.connect(&ApiEvents::CommentAddedHandler);
 	Checkable::OnCommentRemoved.connect(&ApiEvents::CommentRemovedHandler);
 	Checkable::OnDowntimeAdded.connect(&ApiEvents::DowntimeAddedHandler);
@@ -545,6 +563,504 @@ Value ApiEvents::EnableFlappingChangedAPIHandler(const MessageOrigin& origin, co
 	return Empty;
 }
 
+void ApiEvents::EnableEventHandlerChangedHandler(const Checkable::Ptr& checkable, bool enabled, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("enabled", enabled);
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetEnableEventHandler");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::EnableEventHandlerChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetEnableEventHandler(params->Get("enabled"), origin);
+
+	return Empty;
+}
+
+void ApiEvents::EnablePerfdataChangedHandler(const Checkable::Ptr& checkable, bool enabled, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("enabled", enabled);
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetEnablePerfdata");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::EnablePerfdataChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetEnablePerfdata(params->Get("enabled"), origin);
+
+	return Empty;
+}
+
+void ApiEvents::CheckIntervalChangedHandler(const Checkable::Ptr& checkable, double interval, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("interval", interval);
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetCheckInterval");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::CheckIntervalChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetCheckInterval(params->Get("interval"), origin);
+
+	return Empty;
+}
+
+void ApiEvents::RetryIntervalChangedHandler(const Checkable::Ptr& checkable, double interval, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("interval", interval);
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetRetryInterval");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::RetryIntervalChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetRetryInterval(params->Get("interval"), origin);
+
+	return Empty;
+}
+
+void ApiEvents::MaxCheckAttemptsChangedHandler(const Checkable::Ptr& checkable, int attempts, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("attempts", attempts);
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetMaxCheckAttempts");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::MaxCheckAttemptsChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetMaxCheckAttempts(params->Get("attempts"), origin);
+
+	return Empty;
+}
+
+void ApiEvents::EventCommandChangedHandler(const Checkable::Ptr& checkable, const EventCommand::Ptr& command, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("command", command->GetName());
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetEventCommand");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::EventCommandChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	EventCommand::Ptr command = EventCommand::GetByName(params->Get("command"));
+
+	if (!command)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	checkable->SetEventCommand(command, origin);
+
+	return Empty;
+}
+
+void ApiEvents::CheckCommandChangedHandler(const Checkable::Ptr& checkable, const CheckCommand::Ptr& command, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("command", command->GetName());
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetCheckCommand");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::CheckCommandChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	CheckCommand::Ptr command = CheckCommand::GetByName(params->Get("command"));
+
+	if (!command)
+		return Empty;
+
+	checkable->SetCheckCommand(command, origin);
+
+	return Empty;
+}
+
+void ApiEvents::CheckPeriodChangedHandler(const Checkable::Ptr& checkable, const TimePeriod::Ptr& timeperiod, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Host::Ptr host;
+	Service::Ptr service;
+	tie(host, service) = GetHostService(checkable);
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("host", host->GetName());
+	if (service)
+		params->Set("service", service->GetShortName());
+	params->Set("timeperiod", timeperiod->GetName());
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetCheckPeriod");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, checkable, message, true);
+}
+
+Value ApiEvents::CheckPeriodChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	Host::Ptr host = FindHostByVirtualName(params->Get("host"), origin);
+
+	if (!host)
+		return Empty;
+
+	Checkable::Ptr checkable;
+
+	if (params->Contains("service"))
+		checkable = host->GetServiceByShortName(params->Get("service"));
+	else
+		checkable = host;
+
+	if (!checkable)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(checkable))
+		return Empty;
+
+	TimePeriod::Ptr timeperiod = TimePeriod::GetByName(params->Get("timeperiod"));
+
+	if (!timeperiod)
+		return Empty;
+
+	checkable->SetCheckPeriod(timeperiod, origin);
+
+	return Empty;
+}
+
+void ApiEvents::VarsChangedHandler(const CustomVarObject::Ptr& object, const Dictionary::Ptr& vars, const MessageOrigin& origin)
+{
+	ApiListener::Ptr listener = ApiListener::GetInstance();
+
+	if (!listener)
+		return;
+
+	Dictionary::Ptr params = make_shared<Dictionary>();
+	params->Set("object", object->GetName());
+	params->Set("vars", Serialize(vars));
+
+	Dictionary::Ptr message = make_shared<Dictionary>();
+	message->Set("jsonrpc", "2.0");
+	message->Set("method", "event::SetVars");
+	message->Set("params", params);
+
+	listener->RelayMessage(origin, object, message, true);
+}
+
+Value ApiEvents::VarsChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
+{
+	if (!params)
+		return Empty;
+
+	String objectName = params->Get("object");
+
+	if (objectName.IsEmpty())
+		return Empty;
+
+	/* ugly, but there is no other way currently */
+	CustomVarObject::Ptr object = Host::GetByName(objectName);
+	if (!object)
+		object = Service::GetByName(objectName);
+	if (!object)
+		object = User::GetByName(objectName);
+	if (!object)
+		object = Service::GetByName(objectName);
+	if (!object)
+		object = EventCommand::GetByName(objectName);
+	if (!object)
+		object = CheckCommand::GetByName(objectName);
+	if (!object)
+		object = NotificationCommand::GetByName(objectName);
+	if (!object)
+		return Empty;
+
+	if (origin.FromZone && !origin.FromZone->CanAccessObject(object))
+		return Empty;
+
+	Dictionary::Ptr vars = Deserialize(params->Get("vars"), true);
+
+	if (!vars)
+		return Empty;
+
+	object->SetVars(vars, origin);
+
+	return Empty;
+}
+
 void ApiEvents::CommentAddedHandler(const Checkable::Ptr& checkable, const Comment::Ptr& comment, const MessageOrigin& origin)
 {
 	ApiListener::Ptr listener = ApiListener::GetInstance();
diff --git a/lib/icinga/apievents.hpp b/lib/icinga/apievents.hpp
index 53ef20098..bb27480db 100644
--- a/lib/icinga/apievents.hpp
+++ b/lib/icinga/apievents.hpp
@@ -22,6 +22,9 @@
 
 #include "icinga/checkable.hpp"
 #include "icinga/host.hpp"
+#include "icinga/checkcommand.hpp"
+#include "icinga/eventcommand.hpp"
+#include "icinga/notificationcommand.hpp"
 
 namespace icinga
 {
@@ -61,6 +64,33 @@ public:
 	static void EnableFlappingChangedHandler(const Checkable::Ptr& checkable, bool enabled, const MessageOrigin& origin);
 	static Value EnableFlappingChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
 
+        static void EnableEventHandlerChangedHandler(const Checkable::Ptr& checkable, bool enabled, const MessageOrigin& origin);
+        static Value EnableEventHandlerChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void EnablePerfdataChangedHandler(const Checkable::Ptr& checkable, bool enabled, const MessageOrigin& origin);
+        static Value EnablePerfdataChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void CheckIntervalChangedHandler(const Checkable::Ptr& checkable, double interval, const MessageOrigin& origin);
+        static Value CheckIntervalChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void RetryIntervalChangedHandler(const Checkable::Ptr& checkable, double interval, const MessageOrigin& origin);
+        static Value RetryIntervalChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void MaxCheckAttemptsChangedHandler(const Checkable::Ptr& checkable, int attempts, const MessageOrigin& origin);
+        static Value MaxCheckAttemptsChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void EventCommandChangedHandler(const Checkable::Ptr& checkable, const EventCommand::Ptr& command, const MessageOrigin& origin);
+        static Value EventCommandChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void CheckCommandChangedHandler(const Checkable::Ptr& checkable, const CheckCommand::Ptr& command, const MessageOrigin& origin);
+        static Value CheckCommandChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void CheckPeriodChangedHandler(const Checkable::Ptr& checkable, const TimePeriod::Ptr& timeperiod, const MessageOrigin& origin);
+        static Value CheckPeriodChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
+        static void VarsChangedHandler(const CustomVarObject::Ptr& object, const Dictionary::Ptr& vars, const MessageOrigin& origin);
+        static Value VarsChangedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
+
 	static void CommentAddedHandler(const Checkable::Ptr& checkable, const Comment::Ptr& comment, const MessageOrigin& origin);
 	static Value CommentAddedAPIHandler(const MessageOrigin& origin, const Dictionary::Ptr& params);
 
diff --git a/lib/icinga/checkable-check.cpp b/lib/icinga/checkable-check.cpp
index 7ec2393c0..50150b757 100644
--- a/lib/icinga/checkable-check.cpp
+++ b/lib/icinga/checkable-check.cpp
@@ -43,6 +43,11 @@ boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)
 boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnablePassiveChecksChanged;
 boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableNotificationsChanged;
 boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableFlappingChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> Checkable::OnCheckIntervalChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> Checkable::OnRetryIntervalChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, const CheckCommand::Ptr&, const MessageOrigin&)> Checkable::OnCheckCommandChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, int, const MessageOrigin&)> Checkable::OnMaxCheckAttemptsChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, const TimePeriod::Ptr&, const MessageOrigin&)> Checkable::OnCheckPeriodChanged;
 boost::signals2::signal<void (const Checkable::Ptr&, FlappingState)> Checkable::OnFlappingChanged;
 
 CheckCommand::Ptr Checkable::GetCheckCommand(void) const
@@ -57,9 +62,11 @@ CheckCommand::Ptr Checkable::GetCheckCommand(void) const
 	return CheckCommand::GetByName(command);
 }
 
-void Checkable::SetCheckCommand(const CheckCommand::Ptr& command)
+void Checkable::SetCheckCommand(const CheckCommand::Ptr& command, const MessageOrigin& origin)
 {
 	SetOverrideCheckCommand(command->GetName());
+
+	OnCheckCommandChanged(GetSelf(), command, origin);
 }
 
 TimePeriod::Ptr Checkable::GetCheckPeriod(void) const
@@ -74,9 +81,11 @@ TimePeriod::Ptr Checkable::GetCheckPeriod(void) const
 	return TimePeriod::GetByName(tp);
 }
 
-void Checkable::SetCheckPeriod(const TimePeriod::Ptr& tp)
+void Checkable::SetCheckPeriod(const TimePeriod::Ptr& tp, const MessageOrigin& origin)
 {
 	SetOverrideCheckPeriod(tp->GetName());
+
+	OnCheckPeriodChanged(GetSelf(), tp, origin);
 }
 
 double Checkable::GetCheckInterval(void) const
@@ -87,9 +96,11 @@ double Checkable::GetCheckInterval(void) const
 		return GetCheckIntervalRaw();
 }
 
-void Checkable::SetCheckInterval(double interval)
+void Checkable::SetCheckInterval(double interval, const MessageOrigin& origin)
 {
 	SetOverrideCheckInterval(interval);
+
+	OnCheckIntervalChanged(GetSelf(), interval, origin);
 }
 
 double Checkable::GetRetryInterval(void) const
@@ -100,9 +111,11 @@ double Checkable::GetRetryInterval(void) const
 		return GetRetryIntervalRaw();
 }
 
-void Checkable::SetRetryInterval(double interval)
+void Checkable::SetRetryInterval(double interval, const MessageOrigin& origin)
 {
 	SetOverrideRetryInterval(interval);
+
+	OnRetryIntervalChanged(GetSelf(), interval, origin);
 }
 
 void Checkable::SetSchedulingOffset(long offset)
@@ -211,9 +224,11 @@ int Checkable::GetMaxCheckAttempts(void) const
 		return GetMaxCheckAttemptsRaw();
 }
 
-void Checkable::SetMaxCheckAttempts(int attempts)
+void Checkable::SetMaxCheckAttempts(int attempts, const MessageOrigin& origin)
 {
 	SetOverrideMaxCheckAttempts(attempts);
+
+	OnMaxCheckAttemptsChanged(GetSelf(), attempts, origin);
 }
 
 void Checkable::ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrigin& origin)
diff --git a/lib/icinga/checkable-event.cpp b/lib/icinga/checkable-event.cpp
index abecdc8c7..a126b282f 100644
--- a/lib/icinga/checkable-event.cpp
+++ b/lib/icinga/checkable-event.cpp
@@ -26,6 +26,8 @@
 using namespace icinga;
 
 boost::signals2::signal<void (const Checkable::Ptr&)> Checkable::OnEventCommandExecuted;
+boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableEventHandlerChanged;
+boost::signals2::signal<void (const Checkable::Ptr&, const EventCommand::Ptr&, const MessageOrigin&)> Checkable::OnEventCommandChanged;
 
 bool Checkable::GetEnableEventHandler(void) const
 {
@@ -35,9 +37,11 @@ bool Checkable::GetEnableEventHandler(void) const
 		return GetEnableEventHandlerRaw();
 }
 
-void Checkable::SetEnableEventHandler(bool enabled)
+void Checkable::SetEnableEventHandler(bool enabled, const MessageOrigin& origin)
 {
 	SetOverrideEnableEventHandler(enabled);
+
+	OnEnableEventHandlerChanged(GetSelf(), enabled, origin);
 }
 
 EventCommand::Ptr Checkable::GetEventCommand(void) const
@@ -52,9 +56,11 @@ EventCommand::Ptr Checkable::GetEventCommand(void) const
 	return EventCommand::GetByName(command);
 }
 
-void Checkable::SetEventCommand(const EventCommand::Ptr& command)
+void Checkable::SetEventCommand(const EventCommand::Ptr& command, const MessageOrigin& origin)
 {
 	SetOverrideEventCommand(command->GetName());
+
+	OnEventCommandChanged(GetSelf(), command, origin);
 }
 
 void Checkable::ExecuteEventHandler(void)
diff --git a/lib/icinga/checkable.cpp b/lib/icinga/checkable.cpp
index ef1c99067..ad44f05d5 100644
--- a/lib/icinga/checkable.cpp
+++ b/lib/icinga/checkable.cpp
@@ -255,6 +255,6 @@ void Checkable::SetModifiedAttributes(int flags, const MessageOrigin& origin)
 
 	if ((flags & ModAttrCustomVariable) == 0) {
 		SetOverrideVars(Empty);
-		OnVarsChanged(GetSelf(), origin);
+		OnVarsChanged(GetSelf(), GetVars(), origin);
 	}
 }
diff --git a/lib/icinga/checkable.hpp b/lib/icinga/checkable.hpp
index f21f3f6db..27468f94d 100644
--- a/lib/icinga/checkable.hpp
+++ b/lib/icinga/checkable.hpp
@@ -98,19 +98,19 @@ public:
 
 	/* Checks */
 	shared_ptr<CheckCommand> GetCheckCommand(void) const;
-	void SetCheckCommand(const shared_ptr<CheckCommand>& command);
+	void SetCheckCommand(const shared_ptr<CheckCommand>& command, const MessageOrigin& origin = MessageOrigin());
 
 	TimePeriod::Ptr GetCheckPeriod(void) const;
-	void SetCheckPeriod(const TimePeriod::Ptr& tp);
+	void SetCheckPeriod(const TimePeriod::Ptr& tp, const MessageOrigin& origin = MessageOrigin());
 
 	double GetCheckInterval(void) const;
-	void SetCheckInterval(double interval);
+	void SetCheckInterval(double interval, const MessageOrigin& origin = MessageOrigin());
 
 	double GetRetryInterval(void) const;
-	void SetRetryInterval(double interval);
+	void SetRetryInterval(double interval, const MessageOrigin& origin = MessageOrigin());
 
 	int GetMaxCheckAttempts(void) const;
-	void SetMaxCheckAttempts(int attempts);
+	void SetMaxCheckAttempts(int attempts, const MessageOrigin& origin = MessageOrigin());
 
 	long GetSchedulingOffset(void);
 	void SetSchedulingOffset(long offset);
@@ -153,6 +153,15 @@ public:
 	static boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> OnEnableNotificationsChanged;
 	static boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> OnEnableFlappingChanged;
 	static boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> OnEnablePerfdataChanged;
+
+	static boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> OnEnableEventHandlerChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> OnCheckIntervalChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> OnRetryIntervalChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, int, const MessageOrigin&)> OnMaxCheckAttemptsChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, const shared_ptr<EventCommand>&, const MessageOrigin&)> OnEventCommandChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, const shared_ptr<CheckCommand>&, const MessageOrigin&)> OnCheckCommandChanged;
+	static boost::signals2::signal<void (const Checkable::Ptr&, const TimePeriod::Ptr&, const MessageOrigin&)> OnCheckPeriodChanged;
+
 	static boost::signals2::signal<void (const Checkable::Ptr&, const CheckResult::Ptr&, const MessageOrigin&)> OnNewCheckResult;
 	static boost::signals2::signal<void (const Checkable::Ptr&, const CheckResult::Ptr&, StateType, const MessageOrigin&)> OnStateChange;
 	static boost::signals2::signal<void (const Checkable::Ptr&, NotificationType, const CheckResult::Ptr&,
@@ -235,10 +244,10 @@ public:
 	void ExecuteEventHandler(void);
 
 	shared_ptr<EventCommand> GetEventCommand(void) const;
-	void SetEventCommand(const shared_ptr<EventCommand>& command);
+	void SetEventCommand(const shared_ptr<EventCommand>& command, const MessageOrigin& origin = MessageOrigin());
 
 	bool GetEnableEventHandler(void) const;
-	void SetEnableEventHandler(bool enabled);
+	void SetEnableEventHandler(bool enabled, const MessageOrigin& origin = MessageOrigin());
 
 	/* Flapping Detection */
 	double GetFlappingCurrent(void) const;
diff --git a/lib/icinga/command.cpp b/lib/icinga/command.cpp
index 50930666a..d77a5e9f9 100644
--- a/lib/icinga/command.cpp
+++ b/lib/icinga/command.cpp
@@ -40,7 +40,7 @@ void Command::SetModifiedAttributes(int flags, const MessageOrigin& origin)
 {
 	if ((flags & ModAttrCustomVariable) == 0) {
 		SetOverrideVars(Empty);
-		OnVarsChanged(GetSelf(), origin);
+		OnVarsChanged(GetSelf(), GetVars(), origin);
 	}
 }
 
diff --git a/lib/icinga/customvarobject.cpp b/lib/icinga/customvarobject.cpp
index cdb9b59cd..75ad2ed66 100644
--- a/lib/icinga/customvarobject.cpp
+++ b/lib/icinga/customvarobject.cpp
@@ -24,7 +24,7 @@ using namespace icinga;
 
 REGISTER_TYPE(CustomVarObject);
 
-boost::signals2::signal<void (const CustomVarObject::Ptr&, const MessageOrigin&)> CustomVarObject::OnVarsChanged;
+boost::signals2::signal<void (const CustomVarObject::Ptr&, const Dictionary::Ptr& vars, const MessageOrigin&)> CustomVarObject::OnVarsChanged;
 
 Dictionary::Ptr CustomVarObject::GetVars(void) const
 {
@@ -38,9 +38,7 @@ void CustomVarObject::SetVars(const Dictionary::Ptr& vars, const MessageOrigin&
 {
 	SetOverrideVars(vars);
 
-	Log(LogNotice, "CustomVarObject", "Setting vars for object '" + GetName() + "'");
-
-	OnVarsChanged(GetSelf(), origin);
+	OnVarsChanged(GetSelf(), vars, origin);
 }
 
 int CustomVarObject::GetModifiedAttributes(void) const
diff --git a/lib/icinga/customvarobject.hpp b/lib/icinga/customvarobject.hpp
index d8903b239..c8929d8d2 100644
--- a/lib/icinga/customvarobject.hpp
+++ b/lib/icinga/customvarobject.hpp
@@ -59,7 +59,7 @@ class I2_ICINGA_API CustomVarObject : public ObjectImpl<CustomVarObject>
 public:
 	DECLARE_PTR_TYPEDEFS(CustomVarObject);
 
-	static boost::signals2::signal<void (const CustomVarObject::Ptr&, const MessageOrigin&)> OnVarsChanged;
+	static boost::signals2::signal<void (const CustomVarObject::Ptr&, const Dictionary::Ptr& vars, const MessageOrigin&)> OnVarsChanged;
 
 	Dictionary::Ptr GetVars(void) const;
 	void SetVars(const Dictionary::Ptr& vars, const MessageOrigin& origin = MessageOrigin());
diff --git a/lib/icinga/user.cpp b/lib/icinga/user.cpp
index 6a2afdc87..543016eac 100644
--- a/lib/icinga/user.cpp
+++ b/lib/icinga/user.cpp
@@ -122,7 +122,7 @@ void User::SetModifiedAttributes(int flags, const MessageOrigin& origin)
 {
 	if ((flags & ModAttrCustomVariable) == 0) {
 		SetOverrideVars(Empty);
-		OnVarsChanged(GetSelf(), origin);
+		OnVarsChanged(GetSelf(), GetVars(), origin);
 	}
 }