# SetLayerMask(LayerMask)

> Sets the _layerMask filter property using the layerMask parameter provided and also enables layer mask filtering by setting _useLayerMask to true.

## Definition

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

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

### Parameters

**** (\[LayerMask]\(/engine/6000.7/script-reference/unityengine/layermask)): The value used to set the [\_layerMask](/engine/6000.7/script-reference/unityengine/contactfilter2d/layermask.md).