title: How to fire onChange event on ZK Textbox?
body: <p>In ZK, say I have a Textbox </p>
  
  <pre><code>&lt;textbox id="tb"/&gt;
  </code></pre>
  
  <p>And then in java I do</p>
  
  <pre><code>private Textbox tb;
  tb.setValue("some new value");
  </code></pre>
  
  <p>I want that when I set this value, to trigger the onChange (or onOK) method of the textbox, as if the user has inputed the new text himself and pressed enter. </p>