HELP CENTER CAN I ADD AN OVERLAY WITH TEXT TO THE CHART

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style>
    html,
    body {
      height: 100%;
      width: 100%;
      margin: 0;
      padding: 0;
    }

    #myChart {
      position: relative;
      height: 100%;
      width: 100%;
      min-height: 150px;
    }

    .zc-ref {
      display: none;
    }

    #chart-mask {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background-color: rgba(195, 195, 195, 0.8);
      z-index: 5000;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      transition: opacity 0.7s;
      opacity: 0;
      pointer-events: none;
    }

    #chart-mask.active {
      transition: opacity 0.7s;
      opacity: 1;
    }
  </style>
</head>

<body>
  <button id="toggle-mask">Toggle Mask</button>
  <div id="myChart">
    <div id="chart-mask"><span>Toggle Mask Text</span></div><a class="zc-ref" href="https://www.zingchart.com">Powered by ZingChart</a>
  </div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      type: 'bar',
      series: [{
        values: [35, 42, 67, 89, 25, 34, 67, 85]
      }]
    };

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: '90%',
      width: '100%'
    });

    document.getElementById('toggle-mask').addEventListener('click', function(e) {
      document.getElementById('chart-mask').classList.toggle('active')
    });
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
</head>

<body>
  <button id="toggle-mask">Toggle Mask</button>
  <div id="myChart">
    <div id="chart-mask"><span>Toggle Mask Text</span></div><a class="zc-ref" href="https://www.zingchart.com">Powered by ZingChart</a>
  </div>
</body>

</html>

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

#myChart {
  position: relative;
  height: 100%;
  width: 100%;
  min-height: 150px;
}

.zc-ref {
  display: none;
}

#chart-mask {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(195, 195, 195, 0.8);
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: opacity 0.7s;
  opacity: 0;
  pointer-events: none;
}

#chart-mask.active {
  transition: opacity 0.7s;
  opacity: 1;
}

var myConfig = {
  type: 'bar',
  series: [{
    values: [35, 42, 67, 89, 25, 34, 67, 85]
  }]
};

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: '90%',
  width: '100%'
});

document.getElementById('toggle-mask').addEventListener('click', function(e) {
  document.getElementById('chart-mask').classList.toggle('active')
});