ample2', 400, 600, 460, 200, 350, 450]
          ]
        });
      }, 2000);

      setTimeout(function () {
        chart.load({
          columns: [
            ['x', new Date('2014-01-02T00:00:00Z'), new Date('2014-02-02T00:00:00Z'), new Date('2014-03-02T00:00:00Z'), new Date('2014-04-02T00:00:00Z'), new Date('2014-05-02T00:00:00Z'), new Date('2014-06-02T00:00:00Z')],
            ['sample', 500, 630, 690, 440, 630, 900],
            ['sample2', 400, 600, 460, 200, 350, 450]
          ]
        });
    