# allowEmptySelection

> Allows having all buttons to be unchecked when set to true.

## Definition

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

```csharp
[UxmlAttribute]
public bool allowEmptySelection { get; set; }
```

### Remarks

When the property value is false, the control will automatically set the first available button to checked.