# UnregisterValueChangedCallback<T>(INotifyValueChanged<T>, EventCallback<ChangeEvent<T>>)

> Unregisters this callback from receiving ChangeEvent<T> when the value is changed.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.6/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public static bool UnregisterValueChangedCallback<T>(this INotifyValueChanged<T> control, EventCallback<ChangeEvent<T>> callback)
```

### Parameters

**** (\[INotifyValueChanged\<T>]\(/engine/6000.6/script-reference/unityengine/uielements/inotifyvaluechanged1)): **** (\[EventCallback\<ChangeEvent\<T>>]\(/engine/6000.6/script-reference/unityengine/uielements/eventcallback)):&#x20;

### Returns

| Type                                                          | Description |
| ------------------------------------------------------------- | ----------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) |             |