title: NSarray it is not working
body: <p>Here is some code</p>
  
  <pre><code>aSong.songDuration = currentElementValue;
  NSLog(@"SD = %@",aSong.songDuration);         //   Here aSong.Duration is right
  [viewController.songs addObject:aSong];
  Music *bSong = [viewController.songs objectAtIndex:1]; // here bSong.Duration is null
  NSLog(@"bSong = %@",bSong.songDuration);
  </code></pre>
  
  <p>I tried different objectAtIndex but all the time the value is null. Is something wrong?</p>
  
  <p>thanks</p>