title: setting a default in sfwidgetformchoice
body: <p>I have an embedded form with a choice widget.  I'm trying to pass a default value from the main form to the widget.  I'm trying to pass the value to the form as an option, then once I have it in the embedded form do I just do something like:</p>
  
  <pre><code>new sfwidgetformchoice(array(...,'default' =&gt; $this-&gt;getOption('default'))
  </code></pre>
  
  <p>doesn't seem to work</p>