# AddCommandHandler(string,Func\<T1, T2, T3, IEnumerator>)

Method in [Actions](https://docs.yarnspinner.dev/2.4/api/csharp/yarn.unity/yarn.unity.actions)

## Summary

```csharp
public void AddCommandHandler<T1, T2, T3>(string commandName, Func<T1, T2, T3, IEnumerator> handler)
```

## Parameters

| Name                                                              | Description |
| ----------------------------------------------------------------- | ----------- |
| `string` commandName                                              |             |
| `System.Func<T1, T2, T3, System.Collections.IEnumerator>` handler |             |