I use OnPrepareSQL to modify the sqlwhereitems as descibed in the
Online help. That's working good.
But how do I invert the given order on the defined oderitems, which
contains concatenated fields (for example custumername+PK)?

example:defined in OrderItems "customername=name,ref"
normal ascending mode is resulting in : ... ORDER by name,ref
wanted additional descending mode: ... ORDER by name desc, ref
desc

An idea is of course to add additional oderitems, but maybe there is
another way to do so?

Regards
Gunther