Problem retrieving values on a childgrid

[Lucas Hernandez]

I have created a few nested datagrid pages succesfully.
My problem happens when I tried to get data by using 2 parameters from
the parent xid and yid... I am getting the same rows in all the childs
for each parent row...
I have diferent xid and yid on each parent row.. and the result shown is
the first childs data for all of them...
I don't know how to track how things are happenning when I click the
button...
Any Idea would help

Thanks

Lucas