MKMapView shows same title for multiple MKPlacemarks - ios

Question

I have a mkmapview that I'm dropping several placemark pins on, however I've not been able to get the pins to show the correct title on the callouts, seems to randomly show a title from the collection of pins on the map. Any ideas? Code looks like:
(void)viewDidLoad {
[super viewDidLoad];
[mapView setDelegate:self];
CLLocationCoordinate2D geos = CLLocationCoordinate2DMake([putInLat doubleValue], [putInLong doubleValue]);
aMarker = [[RNPlaceMark alloc] initWithCoordinate:geos Title:#"Location A"];
CLLocationCoordinate2D geos2 = CLLocationCoordinate2DMake([takeOutLat doubleValue], [takeOutLong doubleValue]);
bMarker = [[RNPlaceMark alloc] initWithCoordinate:geos2 Title:#"Location B"];
NSArray *annots = [[NSArray alloc] initWithObjects:putInMarker, takeOutMarker, nil];
[mapView addAnnotations:annots];
}
and
(MKAnnotationView *)mapView:(MKMapView *)aMapView viewForAnnotation:(id<MKAnnotation>)annotation {
NSString *title = annotation.title;
MKPinAnnotationView *pinView=(MKPinAnnotationView *)[aMapView dequeueReusableAnnotationViewWithIdentifier:title];
if(pinView==nil)
pinView=[[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:title] autorelease];
if(annotation == aMarker)
[pinView setPinColor:MKPinAnnotationColorGreen];
else if(annotation == bMarker)
[pinView setPinColor:MKPinAnnotationColorRed];
pinView.canShowCallout=YES;
pinView.animatesDrop=YES;
return pinView;
}

Answer 1

I switched the code to use MKPointAnnotation it worked fine, so now it looks like...
I'm executing the following code in my viewDidLoad method on the view that host the UIMapVIew:
MKPointAnnotation *myMarker = [[MKPointAnnotation alloc] init];
[myMarker setTitle:#"Hello World"];
CLLocationCoordinate2D geos = CLLocationCoordinate2DMake([myMarkerLat doubleValue], [myMarkerLong doubleValue]);
[myMarker setCoordinate:geos];
NSArray *annots = [[NSArray alloc] initWithObjects:myMarker, nil];
[mapView addAnnotations:annots];
then I have...
- (MKAnnotationView *)mapView:(MKMapView *)aMapView viewForAnnotation:(id
<MKAnnotation>)annotation
{
NSString *title = annotation.title;
MKPinAnnotationView *pinView=(MKPinAnnotationView *)[aMapView dequeueReusableAnnotationViewWithIdentifier:title];
if(pinView==nil)
pinView=[[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:title] autorelease];
//If you want to change the color of the pin you can with something like...
//if(annotation == whatEverInstanceOfAMarkerIWantToKeep)
// [pinView setPinColor:MKPinAnnotationColorGreen];
pinView.canShowCallout=YES;
pinView.animatesDrop=YES;
return pinView;
}