OBXI (Cash discount): different GL accounts

Hi,

I have an issue with OBXI (Cash discount). I would like to assign the GL account based in any other parameter as company code or nationality of the third party. It seems that it can just be setup at the Chart of Accounts Level and Tax Code. Any idea? Any Exit to implemented? Maybe a substitution?

I have checked many discussions but in none of them I found a real answer.

Please let me know.

Daniel