diff --git a/lib/base/scriptutils.cpp b/lib/base/scriptutils.cpp
index d3f4478cf..ceabf1ec8 100644
--- a/lib/base/scriptutils.cpp
+++ b/lib/base/scriptutils.cpp
@@ -80,7 +80,7 @@ bool ScriptUtils::Regex(const String& pattern, const String& text)
 	return res;
 }
 
-int ScriptUtils::Len(const Value& value)
+double ScriptUtils::Len(const Value& value)
 {
 	if (value.IsObjectType<Dictionary>()) {
 		Dictionary::Ptr dict = value;
@@ -88,8 +88,10 @@ int ScriptUtils::Len(const Value& value)
 	} else if (value.IsObjectType<Array>()) {
 		Array::Ptr array = value;
 		return array->GetLength();
-	} else {
+	} else if (value.IsString()) {
 		return Convert::ToString(value).GetLength();
+	} else {
+		return 0;
 	}
 }
 
diff --git a/lib/base/scriptutils.hpp b/lib/base/scriptutils.hpp
index 452635bd5..b6c98470e 100644
--- a/lib/base/scriptutils.hpp
+++ b/lib/base/scriptutils.hpp
@@ -40,7 +40,7 @@ public:
 	static double CastNumber(const Value& value);
 	static bool CastBool(const Value& value);
 	static bool Regex(const String& pattern, const String& text);
-	static int Len(const Value& value);
+	static double Len(const Value& value);
 	static Array::Ptr Union(const std::vector<Value>& arguments);
 	static Array::Ptr Intersection(const std::vector<Value>& arguments);
 	static void Log(const std::vector<Value>& arguments);