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# regionTriggersOnce

A Boolean value indicating whether crossing a geographic region boundary delivers only one notification.

```
var regionTriggersOnce: Bool { get set }
```

## Discussion

When the value of this property is <doc://com.apple.documentation/documentation/Swift/true>, the user is notified only upon the first crossing the boundary of the target [`region`](/documentation/UIKit/UILocalNotification/region). After the first crossing, the local notification is unscheduled. When the value of this property is <doc://com.apple.documentation/documentation/Swift/false>, notifications are delivered with each boundary crossing. The default value of this property is <doc://com.apple.documentation/documentation/Swift/true>.

The region object itself defines whether the notification is triggered when the user enters or exits the region.

---

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