Zoran, check the latest VFUG newsletter basically the idea is to have an environment class and instantiate it either in the BeforeOpenTables event of the DE or in the Load event (if you instantiate DEs manually) Arnon > >Could someone tell me how to set environment ( SET TALK, DELETED, CENTURY >etc. ) to be default for all data sessions, Because when I work with >private data session I have different environment than default data >session. >