i am trying to do a basic column chart. i have looked the examples but not sure why i do not see any graph (lines). I can see the title and subtitle appear an no javascript errors in firebug. any help please

            $(function () {
                var chart;
                $(document).ready(function() {
                    chart = new Highcharts.Chart({
                        chart: {
                            renderTo: 'container',
                            type: 'column',
                            events: {
                                load: requestData
                            }
                        },
                        title: {
                            text: 'Some title'
                        },
                        subtitle: {
                            text: 'subtitle'
                        },
                        xAxis: {
                            categories: [],
                            title: {
                                text: null
                            }
                        },
                        yAxis: {
                            min: 0,
                            title: {
                                text: 'y-Axis',
                                align: 'high'
                            }
                        },
                        tooltip: {
                            formatter: function() {
                                return ''+
                                    this.series.name +': '+ this.y +' ';
                            }
                        },
                        plotOptions: {
                            bar: {
                                dataLabels: {
                                    enabled: true
                                }
                            }
                        },
                        legend: {
                            layout: 'vertical',
                            align: 'right',
                            verticalAlign: 'top',
                            x: -100,
                            y: 100,
                            floating: true,
                            borderWidth: 1,
                            backgroundColor: '#FFFFFF',
                            shadow: true
                        },
                        credits: {
                            enabled: false
                        },
                        series:[]
                    });
                });

                function requestData() {
                    $.ajax({
                        url: 'test.json',
                        success: function(data) {
                            options.series[0].push(data);
                            chart.redraw();
                        },
                        cache: false
                    });
                }

            });

my json input file is below

            [
                        {
                            name: 'name1',
                            y: [32.6,16.6,1.5]
                        }, {
                            name: 'name2',
                            y: [6.7,0.2,0.6]
                        }, {
                            name: 'name3',
                            y: [1,3.7,0.7]
                        }, {
                            name: 'name4',
                            y: [20.3,8.8,9.5]
                        },{
                            name: 'name5',
                            y: [21.5,10,7.2]
                        }, {
                            name: 'name6',
                            y: [1.4,1.8,3.7]
                        }, {
                            name: 'name7',
                            y: [8.1,0,0]
                        }, {
                            name: 'name8',
                            y: [28.9,8.9,6.6]
                        }
                    ]