Add overlay to MPMoviePlayerViewController

Question

Hi I need to add a custom overlay to a MPMoviePlayerViewController but for some reason I can't get it to work. This is my code I have. Right now the custom overlay is just a gray view that covers the whole screen.

NSString *url = [[NSBundle mainBundle] pathForResource:@"mymovie" ofType:@"mp4"];
    mViewPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:url]];
    mViewPlayer.moviePlayer.controlStyle = MPMovieControlStyleNone;
    mViewPlayer.moviePlayer.scalingMode = MPMovieScalingModeAspectFill;
MyBx.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
MyBx.backgroundColor = [UIColor grayColor];
[mViewPlayer.view addSubview:MyBx];
[NSNotificationCenter defaultCenter] 
 addObserver:self selector:@selector(movieDidExitFullscreen:) 
     name:MPMoviePlayerPlaybackDidFinishNotification 
     object:[mViewPlayer moviePlayer]];

    [[NSNotificationCenter defaultCenter] 
     addObserver:self selector:@selector(MymovieStateChange:) 
     name:MPMoviePlayerPlaybackStateDidChangeNotification
     object:[mViewPlayer moviePlayer]];

    [self presentMoviePlayerViewControllerAnimated:mViewPlayer]

Thank you for the help!