title: Calling a function or targeting an element in another controller in Titanium Alloy
body: <p>So, I'm creating a custom modal window:</p>
  
  <pre><code>var modal = Alloy.createController('modal');
  modal.getView().open();
  </code></pre>
  
  <p>Inside the Modal controller is a function called <code>changeTitle</code> and in the view is a label with the id <code>modalTitle</code>. What I'm trying to figure out is how to call either one from the controller that <em>launched</em> the Modal window.</p>
  
  <p>I thought the following would call the function in the controller, but no dice:</p>
  
  <pre><code>modal.changeTitle('foo');
  </code></pre>
  
  <p>Similarly I thought the following would target the label in the newly created view, but again, no dice.</p>
  
  <pre><code>var modalWin = modal.getView();
  modalWin.$.modalTitle = 'foo';
  </code></pre>