# Exists(int)

> Checks if an ID exists within this tree.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.6/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public bool Exists(int id)
```

### Parameters

**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): The id to look for.

### Returns

| Type                                                          | Description                                      |
| ------------------------------------------------------------- | ------------------------------------------------ |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | Whether an item with this id exists in the tree. |