How draw a stacked column chart with type datetime

How draw a stacked column chart with type datetime

Whats the reason for the following chart don't render dates on the xAxis:
http://jsfiddle.net/NwkAr/
This are the settings:
{
chart: {
type: 'column'
},
title: {
text: 'Stacked column chart'
},
xAxis: {
categories: [10000, 20000, 30000, 40000],
type: 'datetime'
},
yAxis: {
min: 0,
title: {
text: 'Total fruit consumption'
},
stackLabels: {
enabled: true,
style: {
fontWeight: 'bold',
color: (Highcharts.theme && Highcharts.theme.textColor) || 'gray'
}
}
},
legend: {
align: 'right',
x: -70,
verticalAlign: 'top',
y: 20,
floating: true,
backgroundColor: (Highcharts.theme &&
Highcharts.theme.legendBackgroundColorSolid) || 'white',
borderColor: '#CCC',
borderWidth: 1,
shadow: false
},
tooltip: {
formatter: function () {
return '<b>' + this.x + '</b><br/>' + this.series.name + ': ' +
this.y + '<br/>' + 'Total: ' + this.point.stackTotal;
}
},
plotOptions: {
column: {
stacking: 'normal',
dataLabels: {
enabled: true,
color: (Highcharts.theme && Highcharts.theme.dataLabelsColor) ||
'white'
}
}
},
series: [{
name: 'John',
data: [5, 3, 4, 7, 2]
}, {
name: 'Jane',
data: [2, 2, 3, 2, 1]
}, {
name: 'Joe',
data: [3, 4, 4, 2, 5]
}]
}