# CallbackOnly

> When the Joint2D breaks, call Joint2D.OnJointBreak2D(Joint2D) but take no other action.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
CallbackOnly = 1
```

### Remarks

NOTE: With this option selected, continuing to break the joint will continue to cause the [Joint2D.OnJointBreak2D(Joint2D)](/engine/6000.0/script-reference/unityengine/joint2d/onjointbreak2d.md) callback to be called.