> Since Release 4.2 Fn the behaviour of the OnDataChange-Event of
> TIB_DataSource has changed. Now it doesn't fire when changes to the
> datasource are made by a lookup-query. Exists a way to switch back to
> the old behaviour ?

Not sure what would have caused this.
Not sure what could reverse it either.
Perhaps you could give more details.
There is probably a better way to do what you are doing.

Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com