diff --git a/Assets/Scripts/Events/EventController.cs b/Assets/Scripts/Events/EventController.cs
index da1926b4..252b8f6a 100644
--- a/Assets/Scripts/Events/EventController.cs
+++ b/Assets/Scripts/Events/EventController.cs
@@ -8,3 +8,11 @@ public class EventController
     public void InvokeEvent() => baseEvent?.Invoke();
 }
 
+public class EventController<T>                   // generic class
+{
+    public Action<T> baseEvent;
+    public void AddListener(Action<T> listener) => baseEvent += listener;
+    public void RemoveListener(Action<T> listener) => baseEvent -= listener;
+    public void InvokeEvent(T type) => baseEvent?.Invoke(type);
+}
+
diff --git a/Assets/Scripts/Service/EventService.cs b/Assets/Scripts/Service/EventService.cs
index fb22c2b5..2bd4f9c9 100644
--- a/Assets/Scripts/Service/EventService.cs
+++ b/Assets/Scripts/Service/EventService.cs
@@ -13,8 +13,25 @@ public static EventService Instance
             return instance;
         }
     }
+    
 
+    //int x = 5;
+    //public int getx()
+    //{
+    //    return x;
+    //}
+
+    //public void setx(int value)
+    //{
+    //    x = value;
+
+    //}
+
+    //public int X { get { return x; } private set { x = value; } }
+
+    //public int X { get;private set; }
     public EventController OnLightSwitchToggled { get; private set; }
+    public EventController<int> OnKeyPickedUp { get; private set; }
 
     public EventService()
     {