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# isNotifying

A Boolean value that indicates whether the characteristic is currently notifying a subscribed central of its value.

```
var isNotifying: Bool { get }
```

## Discussion

This value is <doc://com.apple.documentation/documentation/Swift/true> if you enabled notifications or indications for the characteristic by successfully calling the [`setNotifyValue(_:for:)`](/documentation/CoreBluetooth/CBPeripheral/setNotifyValue(_:for:)) method of the [`CBPeripheral`](/documentation/CoreBluetooth/CBPeripheral) class. In this case, the peripheral updates its connected central that whenever the characteristic’s value changes.

If the value of the property is <doc://com.apple.documentation/documentation/Swift/false>, notifications (or indications) aren’t enabled for the characteristic, and the peripheral doesn’t update its connected central when the characteristic’s value changes.

## Topics

### Related Documentation

[`-  setNotifyValue:forCharacteristic:`](/documentation/CoreBluetooth/CBPeripheral/setNotifyValue(_:for:))

Sets notifications or indications for the value of a specified characteristic.


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