Document variables can only be created by the use of Visual Basic. However,
using Visual Basic, it is certainly possible to create variables for each
document produced by a mailmerge. The mailmerge process itself however
cannot do it.
Better if you tell us exactly what the purpose of the variables will be so
that we can suggest what's best.
--
Please post any further questions or followup to the newsgroups for the
benefit of others who may be interested. Unsolicited questions forwarded
directly to me will only be answered on a paid consulting basis.
Hope this helps
Doug Robbins - Word MVP