# userData

> This property can be used to associate application-specific user data with this VisualElement.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.UIElements](/engine/6000.0/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
[CreateProperty]
public object userData { get; set; }
```