EKL to retrieve and use database Excel Document

Hi,

I'm trying tu use EKL on CATIA in order to retrieve a Document saved on a 3DSpace (created through Bookmark Editor).
This document is an Excel document, so I also would like to read it and write inside it !

I already succeed to get it thanks to:
CreatePLMQuery("Document")

But I'm stuck here...

Thanks a lot !! :)