title: How do I assign hidden value to JSTL variable?
body: <p>How do I assign hidden value to JSTL variable?</p>
  
  <p>Example:</p>
  
  <pre><code>&lt;input type="hidden" name="userName" value="Administrator" /&gt;
  &lt;c:set var="user" value="" /&gt;  // How do I set hidden variable value (Administrator) here?
  </code></pre>