title: Accordion in appmaker
body: <p>I have made an accordion in Google App Maker and it's working fine.</p>
  
  <p>But by defect, the first accordion row shows the detail part... I don't want to show the details unless we specify it (clicking on a "expand" button) </p>
  
  <p>Is that possible? I have tried to do it via css and it doesn't work...</p>
  
  <p>I also have tried this: (widget = expand button)</p>
  
  <pre><code>if (widget.parent.parent.children.Accordion1Detail.visible === false){
    widget.parent.parent.children.Accordion1Detail.visible = true;
  } else {
    widget.parent.parent.children.Accordion1Detail.visible = false;
  }
  </code></pre>