Developing mapKit (Store Locator)

Hello, I need some support in developing map/List/Detail view for store locator. 1) while set the mapAnnotations of an array to mapview am getting result null but mapAnnotations contains values. I guess I am doing wrong while doing IBOutlet link. [[login to view URL] addAnnotations:[login to view URL]]; Note: @property (nonatomic, retain) IBOutlet MKMapView *mapView; @property (nonatomic, retain) NSMutableArray *mapAnnotations; 2) one more want to pass vales of an array from one view controller to another table view controller but can not set values [listController setAddressArray: addressArray]; Need support on the above issues. Thanks.