位置情報を基にしたしたローカル通知の実装

ある座標の半径500mに入った時点でローカル通知を出したいのですが上手く動きません。
Notification, Location(Always usage)はどちらも許可されている前提です。
またCapablitiesの設定は画像の通りです

Swift4
1import UIKit
2import CoreLocation
3import UserNotifications
4
5class a: UIViewController {
6    
7    @objc func didSwitched(_ sender: UISwitch) {
8        switch sender.isOn {
9        case true:
10            setupNotification(coordinate: CLLocationCoordinate2D(任意の値))
11        case false:
12            deleteNotification()
13        }
14    }
15    
16    
17    func setupNotification(coordinate: CLLocationCoordinate2D) {
18        let trigger: UNNotificationTrigger
19        let  region = CLCircularRegion(center: coordinate, radius: 500, identifier: "destination")
20        region.notifyOnExit = false
21        trigger = UNLocationNotificationTrigger(region: region, repeats: false)
22        let content = UNMutableNotificationContent()
23        content.title = "title"
24        content.body = "body"
25        content.sound = UNNotificationSound.default
26        let request = UNNotificationRequest(identifier: "destination", content: content, trigger: trigger)
27        UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
28    }
29    
30    func deleteNotification() {
31        UNUserNotificationCenter.current().getPendingNotificationRequests { (requests) in
32            for request in requests{
33                if request.content.categoryIdentifier == "destination"{
34                    UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: ["destination"])
35                }
36            }
37        }
38    }
39}
40