---
title: "notifyPropertiesChanged(_:)"
framework: coremediaio
role: symbol
role_heading: Instance Method
path: "coremediaio/cmioextensionprovider/notifypropertieschanged(_:)"
---

# notifyPropertiesChanged(_:)

Notifies connected clients of device property changes.

## Declaration

```swift
func notifyPropertiesChanged(_ propertyStates: [CMIOExtensionProperty : CMIOExtensionPropertyState<AnyObject>])
```

## Parameters

- `propertyStates`: A dictionary of properties with changes.

## See Also

### Managing Clients

- [connectedClients](coremediaio/cmioextensionprovider/connectedclients.md)