# valid

> True if the NavMesh link is added to the navigation system - otherwise false (Read Only).

## Definition

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

> **Warning:**
>
> **Deprecated.** valid has been deprecated. Use NavMesh.IsLinkValid() instead.

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

### Remarks

Additional Resources: [NavMesh.IsLinkValid](/engine/6000.5/script-reference/unityengine/ai/navmesh/islinkvalid.md)