title: Dynamically add content in the multiselect dropdown in jquery
body: <p>I have some doubt on multiple select in dropdown with checkbox. i want to dynamically add the content in drop down whenever i upload a image in jquery.How to refresh dropdown with new data?</p>
  
  <pre><code>$('#listImage').multiselect({});
  </code></pre>
  
  <p>once i get the new data i tried to refresh the multiselect but that throws error.</p>
  
  <pre><code> $("#widgetSettingsForm select[multiple]").multiselect('rebuild');
  </code></pre>
  
  <p>Uncaught Error: no such method 'rebuild' for multiselect widget instance(...)</p>