diff --git a/src-csharp/ExampleComponent.cs b/src-csharp/ExampleComponent.cs
index 335a2ad..7781137 100644
--- a/src-csharp/ExampleComponent.cs
+++ b/src-csharp/ExampleComponent.cs
@@ -14,6 +14,14 @@ public class ExampleComponent : Component
         Console.WriteLine($"C# deltaTime {deltaTime} object id {Owner.Id}");
         ImGui.Begin("C# WINDOW");
         ImGui.Text("Hello from ExampleComponent!");
+        if (ImGui.Button("create GameObject"))
+        {
+            GameObject.Create();
+        }
+        if (ImGui.Button("GC Collect"))
+        {
+            GC.Collect();
+        }
         ImGui.End();
     }
 }
\ No newline at end of file
diff --git a/src-csharp/GameObject.cs b/src-csharp/GameObject.cs
index 15a334b..bd77b4c 100644
--- a/src-csharp/GameObject.cs
+++ b/src-csharp/GameObject.cs
@@ -41,6 +41,7 @@ public class GameObject
     {
         NativeFunctions.createGameObject(out ulong id, out uint index);
         var o = new GameObject(id, index);
+        Console.WriteLine($"C# created object with id {id}, index {index}");
         return o;
     }
 
@@ -54,18 +55,24 @@ public class GameObject
             throw new Exception($"Can't destroy GameObject({_id})");
     }
 
+    ~GameObject()
+    {
+        // destroys object native part when managed part is garbage-collected
+        Destroy();
+    }
+
     /// <param name="t">type derived from Component</param>
     /// <returns>true if new component instance was created, false if component of the same tipe is already added to GameObject</returns>
     /// <exception cref="Exception"></exception>
     public bool TryCreateComponent(Type t)
     {
-        if(!t.IsSubclassOf(typeof(Component)))
+        if (!t.IsSubclassOf(typeof(Component)))
             throw new Exception($"type {t.FullName} is not a derived class of {typeof(Component).FullName}");
 
-        if(Components.ContainsKey(t))
+        if (Components.ContainsKey(t))
             return false;
-        
-        Component component = (Component?)Activator.CreateInstance(t, this) 
+
+        Component component = (Component?)Activator.CreateInstance(t, this)
             ?? throw new Exception($"can't create instance of class {t.FullName}");
         Components.Add(t, component);
         return true;
@@ -78,7 +85,9 @@ public class GameObject
     
     private void InvokeUpdate(double deltaTime)
     {
-        foreach(var p in Components)
+        Console.WriteLine("C# InvokeUpdate");
+        Console.WriteLine($"id {_id}, index {_index}, destroyed {_isDestroyed}");
+        foreach (var p in Components)
         {
             p.Value.Update(deltaTime);
         }
diff --git a/src-csharp/NativeFunctions.cs b/src-csharp/NativeFunctions.cs
index 77849b5..416d848 100644
--- a/src-csharp/NativeFunctions.cs
+++ b/src-csharp/NativeFunctions.cs
@@ -1,13 +1,12 @@
-using System;
-using System.Runtime.InteropServices;
+using System.Runtime.CompilerServices;
 
 namespace Ougge;
 
 internal static class NativeFunctions
 {
-    [DllImport("__Internal")]
+    [MethodImpl(MethodImplOptions.InternalCall)]
     internal extern static void createGameObject(out ulong id, out uint index);
 
-    [DllImport("__Internal")]
+    [MethodImpl(MethodImplOptions.InternalCall)]
     internal extern static bool freeGameObject(uint index);   
 }
\ No newline at end of file
diff --git a/src/Engine.cpp b/src/Engine.cpp
index 81ef37e..5cfc768 100644
--- a/src/Engine.cpp
+++ b/src/Engine.cpp
@@ -48,7 +48,7 @@ void Engine::stopLoop(){
 void Engine::handleModuleError(IEngineModule& module, const char* type, const char* method, const char* error){
     std::string error_message = ougge_format(
         "Catched %s at %s.%s(): %s",
-        type, module.getName(), method, error);
+        type, module.getName().c_str(), method, error);
     std::cerr<<error_message<<std::endl;
     error_messages.push_back(error_message);
 }
diff --git a/src/modules/MonoGameObjectSystem.cpp b/src/modules/MonoGameObjectSystem.cpp
index 9374b92..a9eebcf 100644
--- a/src/modules/MonoGameObjectSystem.cpp
+++ b/src/modules/MonoGameObjectSystem.cpp
@@ -26,22 +26,27 @@ void MonoGameObjectSystem::registerNativeCallbacks(){
 
     auto createGameObject_callback = static_cast<void(*)(u64*, u32*)> (
         [](u64* id_out, u32* index_out) -> void {
+            std::cout<<"createGameObject_callback"<<std::endl;
             this_static->createGameObjectInPool(id_out, index_out);
         }
     );
-    mono_add_internal_call("createGameObject", (void*)createGameObject_callback);
+    mono_add_internal_call("Ougge.NativeFunctions::createGameObject", (void*)createGameObject_callback);
     
     auto freeGameObject_callback = static_cast<bool(*)(u32)>(
         [](u32 index) -> bool {
+            std::cout<<"freeGameObject_callback"<<std::endl;
             return this_static->gameObjectPool.erase(index);
         }
     );
-    mono_add_internal_call("freeGameObject", (void*)freeGameObject_callback);
+    mono_add_internal_call("Ougge.NativeFunctions::freeGameObject", (void*)freeGameObject_callback);
 }
 
 void MonoGameObjectSystem::beginFrame(){
     for(auto pair : gameObjectPool){
-        gameObjectInvokeUpdate(pair.second.getObjectHandle().getObject(), engine.deltaTime);
+
+        auto obj = pair.second.getObjectHandle().getObject();
+        std::cout<<"updating obj: "<<obj<<std::endl;
+        gameObjectInvokeUpdate(obj, engine.deltaTime);
     }
 }