# areaMask

> Specifies which NavMesh areas are passable. Changing areaMask will make the path stale (see NavMeshAgent.isPathStale ).

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.AI](/engine/6000.3/script-reference/unityengine/ai.md)
* **Assembly:** UnityEngine.AIModule

```csharp
public int areaMask { get; set; }
```

### Remarks

This is a bitfield.