I have a plist with dictionary of array's with coordinates (stored as strings).

I want to create a CLLocationCoordinate2D from every array and crate an overlay for the map.

I did that -

NSString *thePath = [[NSBundle mainBundle]  pathForResource:@"Roots" ofType:@"plist"];
    NSDictionary *pointsDic = [[NSDictionary alloc] initWithContentsOfFile:thePath];

 NSArray *pointsArray = [NSArray arrayWithArray:[pointsDic objectForKey:@"roade1"]];

 CLLocationCoordinate2D pointsToUse[256];

 for(int i = 0; i < 256; i++) {
  CGPoint p = CGPointFromString([pointsArray objectAtIndex:i]);
  pointsToUse[i] = CLLocationCoordinate2DMake(p.x,p.y);
  NSLog(@"coord %f",pointsToUse [i].longitude);
  NSLog(@"coord %f",pointsToUse [i].latitude);

 }

 MKPolyline *myPolyline = [MKPolyline polylineWithCoordinates:pointsToUse count:256];

 [[self mv] addOverlay:myPolyline];

but the app is crashing without any error. (BTW when i remove the addOverLay method the app does not crash).

I have 2 questions-

1. What am i doing wrong?

2. I have tried to set the pointsArray count as the argument for the CLLocationCoordinate2D like that -

   CLLocationCoordinate2D pointsToUse[pointsArray count];

And i am getting an error. How can i set the CLLocationCoordinate2D dynamically ?

Thanks for any help. Shani