# LoadSceneAsyncByNameOrIndex(string, int, LoadSceneParameters, bool)

> Override for customizing the behavior of the SceneManager.LoadScene and SceneManager.LoadSceneAsync functions.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.SceneManagement](/engine/6000.5/script-reference/unityengine/scenemanagement.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
protected virtual AsyncOperation LoadSceneAsyncByNameOrIndex(string sceneName, int sceneBuildIndex, LoadSceneParameters parameters, bool mustCompleteNextFrame)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): **** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): **** (\[LoadSceneParameters]\(/engine/6000.5/script-reference/unityengine/scenemanagement/loadsceneparameters)): **** (\[bool]\(https\://learn.microsoft.com/dotnet/api/system.boolean)): 

### Returns

| Type                                                                            | Description |
| ------------------------------------------------------------------------------- | ----------- |
| [AsyncOperation](/engine/6000.5/script-reference/unityengine/asyncoperation.md) |             |