[flexcoders] sort datagridcolumn on numeric field

[amigo_fd]

Hello, it looks like all data in a datagrid is treated as text. So if
you sort a column with only numeric fields it is sorted on the value
of the textual contect, instead of the numeric value, like this:

1095
111
1276
144
...

I already converted my webservice-result to numbers at loading, but
sorting keeps using text-value ... How to change this ?

dgInvoiceListGrouped.dataProvider = new XMLListCollection(x.children());
var GroupedArray:Array = [];
                
for (var j:Number = 0; j < dgInvoiceList.dataProvider.length; j++) {    
GroupedArray[j] = {Name:
dgInvoiceListGrouped.dataProvider.getItemAt(j).Name.toString(),
                Country:
dgInvoiceListGrouped.dataProvider.getItemAt(j).Country.toString(),
                GroupedTotalExcl:
Number(dgInvoiceListGrouped.dataProvider.getItemAt(j).GroupedTotalExcl.toString()),
                GroupedTotalIncl:
Number(dgInvoiceListGrouped.dataProvider.getItemAt(j).GroupedTotalIncl.toString())};
}
                
dgInvoiceListGrouped.dataProvider = [];
dgInvoiceListGrouped.dataProvider = GroupedArray;