Spry:sort how to sort nested ds

Question

I use XMLDataSet to get Values from XML.
First thing, i used nested XMLDataSets, to get nested datas.
It works, but i have Problem with sort.
When i use spry:sort and than the nested Set it adjust only the nested values like here:
http://labs.adobe.com/technologies/spry/samples/data_region/NestedDataSample.html
My project is a car database. So i have cars...and in the xml file are the colors and kilometers in nested roots. So i ca get them only with the nested procedure. My Target is, that when the user sort by nested value, the whole table is  sort by the nested sort.
Like....
If i have my table with all the cars....than i will sort the hwole table over modell....price..and and...but also over color.
How can i make this? because now i can only change the basic datastring or the nested datastring them self... so i never can sort the whole table by color...
Thanks for help!
TELLO

Answer 1

Any help for me?
Here the code....so i guess it helps more to understand what i mean...:
var ds_autosuche = new Spry.Data.XMLDataSet("............xml", "results/result[brand != 0]");
ds_autosuche.setColumnType("price", "number");
var ds_autosuche_modell = new Spry.Data.NestedXMLDataSet(ds_autosuche, "modell/name");
var ds_autosuche_ez = new Spry.Data.NestedXMLDataSet(ds_autosuche, "infos/info[@type = 'ez']" );
var ds_autosuche_fuel = new Spry.Data.NestedXMLDataSet(ds_autosuche, "infos/info[@type = 'fuel']" );
var ds_autosuche_farbe = new Spry.Data.NestedXMLDataSet(ds_autosuche, "color/name");
var ds_autosuche_km = new Spry.Data.NestedXMLDataSet(ds_autosuche, "infos/info[@type = 'km']" );
i output than a table, where on every column is one value for one car. So than i can sort by brand, price....
but not the whole table by name, km, ez, fuel... because they all nested datasources... how can i sort the whole table over nested typs....????
TELLO