xi_af_uds_msg for udms

hi

anyone knows how to configure xi_af_uds_msg for udms (user defined message search) in archive tab of message monitoring?

I am not even getting user defined attributes tab in archive tab of message monitoring in PO 7.4 SP 6 .

Archive is set up using xi_af_msg and its working correctly. But UDMS is not.

appreciate any help

thx

mike