diff --git a/Engine.Core/Exceptions/AssignException.cs b/Engine.Core/Exceptions/AssignException.cs
index 9adc27e..ec4f234 100644
--- a/Engine.Core/Exceptions/AssignException.cs
+++ b/Engine.Core/Exceptions/AssignException.cs
@@ -7,13 +7,6 @@ public class AssignException : Exception
     public AssignException() : base("Assign operation has failed.") { }
     public AssignException(string? message) : base(message) { }
 
-    // public static AssignException FromStateEnable(IStateEnable? stateEnable)
-    //     => new AssignException($"{nameof(IGameObject.AssignStateEnable)} failed on type {stateEnable?.GetType().ToString() ?? "\"null\""}");
     public static AssignException From<T, T2>(T to, T2? value)
-        => new($"Assign operation has failed on T: {typeof(T).FullName}, value: {value?.GetType().ToString() ?? "\"null\""}");
-    // public static AssignException FromBehaviourController(IBehaviourController? behaviourController)
-    //     => new AssignException($"{nameof(IGameObject.AssignBehaviourController)} failed on type {behaviourController?.GetType().ToString() ?? "\"null\""}");
+        => new($"Assign operation has failed on T: {to?.GetType().FullName ?? "\"null\""}, value: {value?.GetType().ToString() ?? "\"null\""}");
 }
-// throw new Exception($"{nameof(IGameObject.AssignTransform)} failed on type {transform?.GetType().ToString() ?? "null"} for type {typeof(T).FullName}");
-// throw new Exception($"{nameof(IGameObject.AssignBehaviourController)} failed on type {behaviourController?.GetType().ToString() ?? "null"} for type {typeof(T).FullName}");
-// throw new Exception($"{nameof(IGameObject.AssignStateEnable)} failed on type {stateEnable?.GetType().ToString() ?? "null"} for type {typeof(T).FullName}");
diff --git a/Engine.Core/Exceptions/NotAssignedException.cs b/Engine.Core/Exceptions/NotAssignedException.cs
index 8480fcf..51ac615 100644
--- a/Engine.Core/Exceptions/NotAssignedException.cs
+++ b/Engine.Core/Exceptions/NotAssignedException.cs
@@ -9,7 +9,7 @@ public class NotAssignedException : Exception
     public NotAssignedException(string? message) : base(message) { }
 
     public static NotAssignedException From<T1, T2>(T1 to, T2? value) where T1 : IAssignable
-        => new($"{typeof(T2).Name} has not been assigned to {typeof(T1).Name}");
+        => new($"{value?.GetType().FullName ?? "\"null\""} has not been assigned to {to?.GetType().FullName ?? "\"null\""}");
 
     public static void Check<T1, T2>(T1 to, T2? value) where T1 : IAssignable
     {