# Unsubscribe a callback function when an Connect Customer agent workspace agent's availability state changes
<a name="3P-apps-agent-events-availabilitystatechanged-unsub"></a>

Unsubscribes the callback function from the agent availability state change event in the Connect Customer agent workspace.

 **Signature** 

```
offAvailabilityStateChanged(handler: AvailabilityStateChangedHandler)
```

 **Usage** 

```
agentClient.offAvailabilityStateChanged(handler);
```