# onButtonClicked

> Callback triggered when the action button is clicked.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public event Action onButtonClicked
```

### Remarks

Provide a callback to automatically create a [Button](/engine/6000.7/script-reference/unityengine/uielements/button.md) if none exists, or update the button's `Clickable.clicked` callback.