title: Sprite Kit unable to pass score, Null Value
body: <p>Im trying to pass score in a very basic way between my game seene and game over scene in my game made in Sprite kit for iOS</p>
  
  <p>first scene</p>
  
  <pre><code>SKTransition* reveal = [SKTransition flipHorizontalWithDuration:1.0];
      GameOver* scene = [GameOver sceneWithSize:self.view.bounds.size];
  
      NSNumber* scoreNum = [NSNumber numberWithInt:score];
  
      scene.score = scoreNum;
      scene.scaleMode = SKSceneScaleModeAspectFill;
      [self.view presentScene:scene transition: reveal];
  </code></pre>
  
  <p>second scene (scene)</p>
  
  <pre><code>NSString* scoreMessage = [NSString stringWithFormat:@"Your Score: %@", self.score.stringValue];
  </code></pre>
  
  <p>I get null every time in the second scene. If i NSLog the NSNumber value in the first scene I get the correct value!</p>
  
  <p>thank you,</p>
  
  <p>Second Scene Property Decloration:</p>
  
  <pre><code>@property (strong) NSNumber* score;
  </code></pre>