---
title: undoManager
framework: appintents
role: symbol
role_heading: Instance Property
path: appintents/undoableintent/undomanager
---

# undoManager

The undo manager you use to register undo actions for your app intents.

## Declaration

```swift
@MainActor var undoManager: UndoManager? { get }
```

## Discussion

Discussion In your app intent’s perform() method, use this property to get an undo manager suitable for registering undoable actions. The system makes every effort to find a suitable undo manager given the current state of your app or app extension. However, if a suitable undo manager isn’t available, the value of this property is nil. Use the undo manager in this property only to register your undoable actions. App intents don’t initiate calls to the undo() or redo() methods of the undo manager. Your app initiates undo and redo operations in response to interactions with its menus or interface.