# notifyPropertiesChanged(_:) Notifies clients of property changes. ``` func notifyPropertiesChanged(_ propertyStates: [CMIOExtensionProperty : CMIOExtensionPropertyState]) ``` ## Parameters `propertyStates` A dictionary of changed properties. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)