# TrickleDown

> The event is sent from the panel's root element to the target element.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
TrickleDown = 1
```

### Remarks

Refer to the [Dispatch events](/engine/6000.7/manual/uitoolkits/uielements/uie-events/dispatching.md) manual page for more information and examples.