perbaikan 86a

        $.ajax({
            method: "POST",
            url: "data",
            data: {"month":month},
            dataType: "json"
          })
            .done(function(res){

              drilldown.series.push({
                name: 'Shift 1',
                id: month,
                color: '#8FBC8F',
                data: res.data,
              });
            });