# userData

> Get/Set PhysicsUserData that can be used for any purpose. This cannot be set on the PhysicsWorld.defaultWorld and will always be at the default. The physics system doesn't use this data, it is entirely for custom use.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public PhysicsUserData userData { get; set; }
```