Resetting Notification App Icon Badge Number

I am trying to reset the application icon badge number for a notification in my game, but I do not know the correct way to do so. Is setting the applicationIconBadgeNumber of the notification to 0 a way? Because I tried that and the badge did not go away.

It is using LocalNotification. Here is how I display the notification:

 LocalNotification notif = new LocalNotification();
 
  
 
                         notif.fireDate = energyRefillTime.Value;
 
  
 
                         notif.alertBody = "You have more lives!";
 
  
 
                         notif.alertAction = "The wait is over!";
 
  
 
                         notif.soundName = LocalNotification.defaultSoundName;
 
  
 
                         notif.applicationIconBadgeNumber = 1;
 
  
 
                         NotificationServices.ScheduleLocalNotification(notif);

Here is how I am trying to reset and clear the application icon badge number:

 notif.applicationIconBadgeNumber = -1;

I have also tried:

 NotificationServices.CancelAllNotifications(); 
 
 NotificationServices.ClearAllNotifications();

Both have not worked.

Please help! Thank you in advance.