Hey everybody! Basically I wanna reverse geocode my coordinates for my annotation and show the address as the subtitle for the annotation. I just cant figure out how to do it...

savePosition.h

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#import <MapKit/MKReverseGeocoder.h>
#import <AddressBook/AddressBook.h>

@interface savePosition : NSObject <MKAnnotation, MKReverseGeocoderDelegate> {

    CLLocationCoordinate2D coordinate;

}


@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;

-(id)initWithCoordinate:(CLLocationCoordinate2D) coordinate;

- (NSString *)subtitle;

- (NSString *)title;
@end

savePosition.m

@synthesize coordinate;

-(NSString *)subtitle{
 return [NSString stringWithFormat:@"%f", streetAddress];  
}

-(NSString *)title{
 return @"Saved position";
}

-(id)initWithCoordinate:(CLLocationCoordinate2D) coor{
 coordinate=coor;
 NSLog(@"%f,%f",coor.latitude,coor.longitude);
 return self;

 MKReverseGeocoder *geocoder = [[MKReverseGeocoder alloc] initWithCoordinate:coordinate];
 geocoder.delegate = self;
 [geocoder start];
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error {
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark 

*)placemark{ 
     NSString *streetAddress = [NSString stringWithFormat:@"%@", [placemark.addressDictionary objectForKey:kABPersonAddressStreetKey]];  
    }  

@end

any ideas?? Thanks in advance!