Since you're using formfields, why not use another field to do the age calculation? That would avoid the need for a macro (and macros can't be used by anyone with Word 2008, anyway). To see how to do this and just about everything else you might want to do with dates in Word, check out my Microsoft Word Date Calculation Tutorial, at:
http://windowssecrets.com/forums/sho...ation-Tutorial
or:
http://www.gmayor.com/downloads.htm#Third_party
In particular, look at the item titled 'Interactively Calculate A Person’s Age'. Do read the document's introductory material.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]