# SetLayerMask(LayerMask)

> A helper method that simultaneously sets both the _layerMask to the specified mask but also sets _useLayerMask to true.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public void SetLayerMask(LayerMask mask)
```

### Parameters

**** (\[LayerMask]\(/engine/6000.7/script-reference/unityengine/layermask)): The layer mask to use.

### Remarks

Additional Resources: [\_useLayerMask](/engine/6000.7/script-reference/unityengine/rigidbody2d/slidemovement/uselayermask.md), [\_layerMask](/engine/6000.7/script-reference/unityengine/rigidbody2d/slidemovement/layermask.md)