title: Put sum of values in center of doughnut chart?
body: <p>I'm drawing this pie chart:</p>
  
  <p><img src="https://i.stack.imgur.com/VcO9q.png" alt="enter image description here"></p>
  
  <p>using this code:</p>
  
  <pre><code>dxPieChart: {
      dataSource: dsAlarmsBySeverity,
      size: {
          width: 275,
          height: 150
      },
      palette: ['#FFFF00', '#FF9900', '#CC3300', '#33CC33', '#0066FF'],
      legend: {
          backgroundColor: '#FCFCFC',
          border: {
                  color: 'black',
                  width: .5,
                  visible: true,
                  cornerRadius: 10
          },
          verticalAlign: 'middle'
      },
      series: [{
          type: 'doughnut',
          argumentField: 'severity',
          valueField: 'count',
          label: {
              visible: false,
              font: {
                  size: 16
              },
              connector: {
                  visible: true,
                  width: 0.5
              },
              position: 'columns',
              customizeText: function(arg) {
                  return arg.argumentText
              }
          },
          border: {
              color: 'black',
              width: .5,
              visible: true
          },
          hoverStyle: {
              border: {
                  color: 'black',
                  width: .5,
                  visible: true
              }
          }
      }]
  }
  </code></pre>
  
  <p>Is there a way to add the sum of all values to the center of the donut?  Like so:</p>
  
  <p><img src="https://i.stack.imgur.com/kiRTQ.png" alt="enter image description here"></p>