group attribute working

<!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></style>
</head>

<body>
  <div id='myChart'></div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      type: 'null',
      shapes: [{
          type: 'square',
          group: 1,
          size: 15,
          backgroundColor: 'red',
          x: 15,
          y: 20,
          hoverState: {
            backgroundColor: 'yellow'
          }
        },
        {
          type: 'square',
          group: 1,
          size: 15,
          backgroundColor: 'red',
          x: 55,
          y: 50,
          hoverState: {
            backgroundColor: 'yellow'
          }
        },
        {
          type: 'square',
          group: 2,
          size: 15,
          backgroundColor: 'orange',
          x: 95,
          y: 50,
          hoverState: {
            backgroundColor: 'green'
          }
        },
        {
          type: 'square',
          group: 2,
          size: 15,
          backgroundColor: 'orange',
          x: 125,
          y: 30,
          hoverState: {
            backgroundColor: 'green'
          }
        }
      ]
    }
    zingchart.render({
      "id": 'myChart',
      "width": '100%',
      "height": 400,
      "data": myConfig
    });

    setTimeout(function() {
      zingchart.exec('myChart', 'updateobject', {
        type: 'shape',
        group: 1,
        data: {
          backgroundColor: 'black'
        }
      });
      zingchart.exec('myChart', 'updateobject', {
        type: 'shape',
        group: 2,
        data: {
          backgroundColor: 'brown'
        }
      });
    }, 2000)
  </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>
  <div id='myChart'></div>
</body>

</html>

var myConfig = {
  type: 'null',
  shapes: [{
      type: 'square',
      group: 1,
      size: 15,
      backgroundColor: 'red',
      x: 15,
      y: 20,
      hoverState: {
        backgroundColor: 'yellow'
      }
    },
    {
      type: 'square',
      group: 1,
      size: 15,
      backgroundColor: 'red',
      x: 55,
      y: 50,
      hoverState: {
        backgroundColor: 'yellow'
      }
    },
    {
      type: 'square',
      group: 2,
      size: 15,
      backgroundColor: 'orange',
      x: 95,
      y: 50,
      hoverState: {
        backgroundColor: 'green'
      }
    },
    {
      type: 'square',
      group: 2,
      size: 15,
      backgroundColor: 'orange',
      x: 125,
      y: 30,
      hoverState: {
        backgroundColor: 'green'
      }
    }
  ]
}
zingchart.render({
  "id": 'myChart',
  "width": '100%',
  "height": 400,
  "data": myConfig
});

setTimeout(function() {
  zingchart.exec('myChart', 'updateobject', {
    type: 'shape',
    group: 1,
    data: {
      backgroundColor: 'black'
    }
  });
  zingchart.exec('myChart', 'updateobject', {
    type: 'shape',
    group: 2,
    data: {
      backgroundColor: 'brown'
    }
  });
}, 2000)