将项目传递到数组并保持格式？

我正在尝试做一个像这样的深入图表http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/column-drilldown /，我非常接近，但是我正在尝试将我的商品输出循环到一个数组中，并获得与演示明细表相同的格式，但是似乎只能在每个循环中获取最后一组商品。如何保持相同的格式并将其传递到数组中？https://jsfiddle.net/pwbz0mxy/

chart_user_hours = {
        chart: {
            type: 'column',
            renderTo: 'hours_chart_container'
        },
        xAxis: {
            type: 'category'
        },
        yAxis: {
            title: {
                text: 'Total Hours'
            }
        },
        legend: {
            enabled: false
        },
        plotOptions: {
            series: {
                borderWidth: 0,
                dataLabels: {
                    enabled: true,
                    format: '{point.y:.2f}'
                }
            }
        },

        tooltip: {
            headerFormat: '<span style="font-size:11px">{series.name}</span><br>',
            pointFormat: '<span style="color:{point.color}">{point.name}</span>: <b>{point.y:.2f}</b> of total<br/>'
        },
        series: [],
        drilldown: {
            series: []
        }
    };

data = '{"comparison":false,"title":"User Capacity Breakdown | January 2016 to July 2016","series":{"name":"User Hours Breakdown ","colorByPoint":true,"data":{"series":{"data":[{"name":"test","y":10,"drilldown":"test"},{"name":"test","y":154,"drilldown":"test"},{"name":"Large Move","y":29,"drilldown":"Large Move"},{"name":"Invoice 78554","y":20,"drilldown":"Invoice 78554"},{"name":"Small Move*","y":13,"drilldown":"Small Move*"}]}}},"drilldown":{"drilldown":{"series":[{"name":"test","id":"test","work_date":["2016-06-10"],"data":[10]},{"name":"test","id":"test","work_date":["2016-07-11","2016-07-10","2016-07-08","2016-07-06"],"data":[37,51,44,22]},{"name":"Large Move","id":"Large Move","work_date":["2016-07-04","2016-07-05","2016-07-08","2016-07-11"],"data":[9,8,7,5]},{"name":"Invoice 78554","id":"Invoice 78554","work_date":["2016-06-14","2016-06-24"],"data":[10,10]},{"name":"Small Move*","id":"Small Move*","work_date":["2016-06-30","2016-06-03"],"data":[3,9]}]}}}';

var obj = $.parseJSON(data);

            chart_data = typeof obj.series.data.series != 'undefined' ? obj.series.data.series.data : '';

            chart_user_hours['series'] = [{
                name: obj.series.name,
                data: chart_data
            }];

            $.each(obj.drilldown.drilldown.series, function( key, value ) {
                chart_user_hours['drilldown']['series'] = [{
                    name: value.work_date,
                    id: value.id,
                    data: value.data
                }];
            });

                        var chart_hours = new Highcharts.Chart(chart_user_hours);