IOS 8: CLVisit in CoreLocation

I'm trying to use the new CLVisit feature in my app to monitor user visit, I followed WWDC-14 video and implemented everything, but locationManager: didVisit doesn't ring at all. I set the NSLocationAlwaysUsageDescription key, turned on the background "Location Updates" in Capabilities and included the following in my class's ViewDidLoad:

_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
[_locationManager requestAlwaysAuthorization];
[_locationManager startMonitoringVisits];

      

        
        
        
      

    

In min. TIME there is no documentation required to stay in a specific place to visit or anything in the DISTANCE between places. I tried to test it with a GPX file and in the building, staying in different locations for over 10 minutes, but locationManager: didVisit delegate didn't start.

Please help me how to check CLVisits, or if I missed anything in the code.