xcode - MapView for IOS7 -

I am new to XCode and am trying to use MapView to create an output connection. Every time I try to issue 'line', it bounces back without connection. How can I fix this?

Check:

1. in the storyboard The object is actually the MKMapView type
2. The view controller has an IBotlet for class mapview (check the visual controller in the storyboard in the inspector)).

(Looks like your problem # 2 for you).