What is it you are trying to achieve ?  Maybe there is some other way...

The client want to flag a couple of function / Representations, and create a log every time a user enters those specific function.  It works for functions, but I can’t trap the entry into the representations…

Sorry I don't have an answer for you.  This is something that should be doable in auditing, so perhaps you could add this as an idea for consideration at http://sagecity.na.sage.com/support_communities/sage_erp_x3/i

Sorry I don't have an answer for you.  This is something that should be doable in auditing, so perhaps you could add this as an idea for consideration at http://sagecity.na.sage.com/support_communities/sage_erp_x3/i