title: Highcharts Pie charts get the selected pie id
body: <p>How do I get Highcharts Pie charts get the selected pie id ?  </p>
  
  <p>I have a data array </p>
  
  <pre><code>var data= { name: series[i], y: Data[i],id:categorydata[i] };
  </code></pre>
  
  <p>Render the chart </p>
  
  <pre><code>new Highcharts.Chart({ ....
  
    ....  
  series: [{
                  type: 'pie',
                  name: 'Category',
                  data: data
              }]
    });
  </code></pre>
  
  <p>How do I get the id of the selected pie. </p>
  
  <p>I am doing this in </p>
  
  <pre><code>plotOptions: {
                  series: {
                      animation: false,
                      events:{
                          click: function (event) {
                              var point = this;
                              //How do I Access the id??????? 
                              alert('value: ' + this.series);
  
  
                          }
                      }
                  },
  </code></pre>