void OnSelectZoneCommand()
		{
			var zoneType = AlarmType == AlarmType.Guard ? ZoneType.Guard : ZoneType.Fire;
			var instructionZonesViewModel = new InstructionZonesViewModel(InstructionZones.ToList(), zoneType);
			if (DialogService.ShowModalWindow(instructionZonesViewModel))
			{
				InstructionZones = new ObservableCollection<Guid>(instructionZonesViewModel.InstructionZonesList);
			}
		}
 void OnSelectZoneCommand()
 {
     var instructionZonesViewModel = new InstructionZonesViewModel(InstructionZones.ToList());
     if (DialogService.ShowModalWindow(instructionZonesViewModel))
     {
         InstructionZones = new ObservableCollection<int>(instructionZonesViewModel.InstructionZonesList);
     }
 }