diff --git a/lib/src/Core/IEventHandler.dart b/lib/src/Core/IEventHandler.dart
index 35d6434..3c3a18f 100644
--- a/lib/src/Core/IEventHandler.dart
+++ b/lib/src/Core/IEventHandler.dart
@@ -1,7 +1,10 @@
 import 'dart:async';
 
+import 'PropertyModificationInfo.dart';
+
 class IEventHandler {
-  final _propertyModifiedController = StreamController<String>();
+  final _propertyModifiedController =
+      StreamController<PropertyModificationInfo>();
 
   Map<String, List<Function>> _events = {};
 
@@ -11,10 +14,11 @@ class IEventHandler {
 
   IEventHandler() {}
 
-  Stream get properyModified => _propertyModifiedController.stream;
+  Stream<PropertyModificationInfo> get properyModified =>
+      _propertyModifiedController.stream;
 
-  emitProperty(String name) {
-    _propertyModifiedController.add(name);
+  emitProperty(PropertyModificationInfo event) {
+    _propertyModifiedController.add(event);
   }
 
   emitArgs(String event, List arguments) {
diff --git a/lib/src/Core/PropertyModificationInfo.dart b/lib/src/Core/PropertyModificationInfo.dart
new file mode 100644
index 0000000..01250c1
--- /dev/null
+++ b/lib/src/Core/PropertyModificationInfo.dart
@@ -0,0 +1,14 @@
+import '../Resource/IResource.dart';
+import '../Resource/Template/PropertyTemplate.dart';
+
+class PropertyModificationInfo {
+  final PropertyTemplate propertyTemplate;
+  final value;
+  final int age;
+  final IResource resource;
+
+  String get name => propertyTemplate.name;
+
+  PropertyModificationInfo(
+      this.resource, this.propertyTemplate, this.value, this.age);
+}