FusionCharts - Enabling editing with update event in Linear Gauge

Created using FusionCharts Suite XT - www.fusioncharts.com

by FusionCharts

HTML

<script src="https://cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
<script src="https://cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
<div id="chart-container">FusionCharts will render here</div>

JavaScript

FusionCharts.ready(function() {
  var CSIGauge = new FusionCharts({
      type: 'hlineargauge',
      renderAt: 'chart-container',
      id: 'cpu-linear-gauge-4',
      width: '400',
      height: '170',
      dataFormat: 'json',
      dataSource: {
        "chart": {
          "theme": "fusion",
          "caption": "Server CPU Utilization",
          "lowerLimit": "0",
          "upperLimit": "100",
          "numberSuffix": "%",
          "chartBottomMargin": "20",
          "valueFontSize": "11",
          "valueFontBold": "0",
          "gaugeFillMix": "{light-10},{light-70},{dark-10}",
          "gaugeFillRatio": "40,20,40"
        },
        "colorRange": {
          "color": [{
            "minValue": "0",
            "maxValue": "35",
            "label": "Low",
          }, {
            "minValue": "35",
            "maxValue": "70",
            "label": "Moderate",
          }, {
            "minValue": "70",
            "maxValue": "100",
            "label": "High",
          }]
        },
        "pointers": {
          "pointer": [{
            "value": "75"
          }]
        }
      },
      "events": {
        'beforeRender': function(evt, args) {
          // creating div for controllers
          var controllers = document.createElement('div');

          // Create radio buttons inside div
          controllers.innerHTML = '<input type="button" value="Get Data" id="getdata_btn" style="margin-left:5px;margin-top:5px;"/><div id="tableView" style="margin: 3px;padding:5px;float: left;"></div>';
          // set css style for controllers div
          controllers.style.cssText = '';
          args.container.appendChild(controllers);
          controllers.setAttribute('id', 'controllers');
        },
        "renderComplete": function(evtObj, argObj) {
          evtObj.sender.intervalVar = setInterval(function() {
            var prcnt = 65 + parseInt(Math.floor(Math.random() * 10), 10);
           ...