# maskNeedsUpdating

> Returns true when the source AvatarMask has changed. This only happens when ModelImporterClipAnimation.maskType is set to ClipAnimationMaskType.CopyFromOther To force a reload of the mask, simply set ModelImporterClipAnimation.maskSource to the desired AvatarMask.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor](/engine/6000.3/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

```csharp
public bool maskNeedsUpdating { get; }
```