help with this code about tree menu ??

[santral]

I have a tree menu which gets information from xml.

in xml :

<dr>
<rsmler>
<grup>
<tree>1.1</tree>    
    <rsm>
    <yol>1-2-1.jpg</yol>
    <isim>My picture</isim>
    </rsm>
</grup>

<grup>
<tree>1.1</tree>    
    <rsm>
    <yol>1-2-1.jpg</yol>
    <isim>My picture</isim>
    </rsm>
</grup>

...etc
</rsmler>
</dr> 

when I click node 1.1 in tree menu ,I want to get grup1 information or when clicked 1.x get the information of grup which has 1.x in <tree>1.x</tree>

I couldnt solve

my not working codes are :

sSelected = Tree.GetSelectedNode( "Tree1"); 
nSelected = String.ToNumber(sSelected); 
maxgrup = XML.Count("dr/rsmler", "grup");

for a = 1,maxgrup do
pathw = "dr/rsmler/grup:"..a
subtree = XML.GetValue(pathw.. "/tree");
subt = String.ToNumber(subtree);
    for nSelected = subt,subt do
            maxresim = XML.Count(""..pathw, "rsm");
            for b = 1,maxresim do
            rsm = pathw.."/rsm:"..b
            rsmyol = XML.GetValue(rsm.."/yol");
            
            Image.Load("sut"..b, "AutoPlay\\MM_Rsm\\"..rsmyol);
            end
    end
end 

pls help ...