title: sending variables to the added subview view controller
body: <p>I know how to retrieve variables from your parent view...
  which is by doing something like this</p>
  
  <p>[(mainViewController *)[self.superview] variableName];</p>
  
  <p>but now i would like to know how to send variable data to a subview...</p>
  
  <p>specially if i do something like this</p>
  
  <pre><code>ScreenTwoViewController *screen2 = [[ScreenTwoViewController alloc] init];
  ...
  ...
  [self.addSubview:screen2.view];
  </code></pre>
  
  <p>in screenTwo i have a variable name Message:</p>
  
  <p>I would like to send a variable message to the actual view so it can display the message in that view based on what the parent view sends it when adding the screen2 view as a subview??</p>