# CallbackOnly

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

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.7/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 `OnJointBreak2D` callback to be called.