# useLayerMask

> Whether the specified Rigidbody2D.SlideMovement.layerMask should be used or not when determining what Collider2D should be detected.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public bool useLayerMask { readonly get; set; }
```

### Remarks

When false, the layers already associated with the [Collider2D](/engine/6000.5/script-reference/unityengine/collider2d.md) attached to the [Rigidbody2D](/engine/6000.5/script-reference/unityengine/rigidbody2d.md) will be used along with the Layer Collision Matrix configuration to determine which [Collider2D](/engine/6000.5/script-reference/unityengine/collider2d.md) will be detected.

When true, the specified [Rigidbody2D.SlideMovement.layerMask](/engine/6000.5/script-reference/unityengine/rigidbody2d/slidemovement/layermask.md) will be used to determine which [Collider2D](/engine/6000.5/script-reference/unityengine/collider2d.md) will be detected and any Layer Collision Matrix configuration will be ignored.

Additional Resources: [Rigidbody2D.SlideMovement.layerMask](/engine/6000.5/script-reference/unityengine/rigidbody2d/slidemovement/layermask.md), [Rigidbody2D.Slide](/engine/6000.5/script-reference/unityengine/rigidbody2d/slide.md) and [Rigidbody2D.SlideResults](/engine/6000.5/script-reference/unityengine/rigidbody2d/slideresults.md).