# roll

> The rotation angle along the z axis of the object. The constraint uses this property to calculate the world up vector when _useUpObject is false.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Animations](/engine/6000.7/script-reference/unityengine/animations.md)
* **Assembly:** UnityEngine.AnimationModule

```csharp
public float roll { get; set; }
```