how to measure click with amp google analytics

gistfile1.txt

<amp-analytics type="googleanalytics" id="analytics3">
<script type="application/json">
{
  "vars": {
    "account": "UA-XXXXX-Y"  // Replace with your property ID.
  },
  "triggers": {
    "trackClickOnHeader" : {
      "on": "click",
      "selector": "#header",
      "request": "event",
      "vars": {
        "eventCategory": 'ui-components',
        "eventAction": 'header-click'
      }
    }
  }
}
</script>
</amp-analytics>