Use of XSL syntax in an excel template

Hi,
I have a flat xml which has only one parent and no sub tree.I want to use the 'for each' loop more than once in my report.based on some condition i need to show up the data in this for loop.
but i can use the "XDO_GROUP_?ROW?"(ROW is my XML parent element) only once as it takes unique group names.
So i tried using xsl function for ' for-each' loop.but still i couldn't.


can you help me in using XSL syntax for grouping and filtering(use of 'if') in an excel template?

Thanks