Complex Datagrid

[ush]

Hi

I am having one aspx page which dynamically loads a user control.

This user control has datagrids, In that the datagrid has template column
which in its edit mode again bind to another user control which again has a
datagrid.

My problem is inside usercontrol' s datagrid edit command is working but
update command is not firing.

Please help me..

thanks