diff --git a/uniper_hmi/UniperHMI/HMIToolkit/HMIObjects/HMIControlButtonVM.cs b/uniper_hmi/UniperHMI/HMIToolkit/HMIObjects/HMIControlButtonVM.cs
index cbaa527..aec449d 100644
--- a/uniper_hmi/UniperHMI/HMIToolkit/HMIObjects/HMIControlButtonVM.cs
+++ b/uniper_hmi/UniperHMI/HMIToolkit/HMIObjects/HMIControlButtonVM.cs
@@ -42,13 +42,13 @@ public sealed partial class HMIControlButtonVM : ObservableObject, IDisposable
 		_variableName = variableName;
 
 		_adsManager.Register(_variableName + ".xRelease", XReleaseCahnged);
-		_adsManager.Register(_variableName + ".iFeedback", IFeedbackChanged);
+		_adsManager.Register(_variableName + ".eFeedback", IFeedbackChanged);
 	}
 
 	public void Dispose()
 	{
 		_adsManager?.Deregister(_variableName + ".xRelease", XReleaseCahnged);
-		_adsManager?.Deregister(_variableName + ".iFeedback", IFeedbackChanged);
+		_adsManager?.Deregister(_variableName + ".eFeedback", IFeedbackChanged);
 	}
 
 	[RelayCommand]