Как обновить график chart.js?

$('form').submit(function ()
  {
      $.ajax({
          method: 'POST',
          url: 'dashboard/filter',
          success: function (data) {
              var percent=[];
              var names=[];
              var colors=[];
              $.each(JSON.parse(data), function(index, report)
              {
                  percent.push(report.count_percent)
              });
              $.each(JSON.parse(data), function(index, name)
              {
                  names.push(name.resname)
              });
              $.each(names, function()
              {
                  colors.push(getRandomColor())
              });

              // console.log(data);

                  globalChart.data.labels=names;
                  globalChart.data.datasets=percent;
                  globalChart.update();
          }
      });
      return false;
  });