Hi Richard,
Use two fields, the:
. first coded as {MERGEFIELD EXPIRATION \@ MMMM}
. second coded as {={MERGEFIELD EXPIRATION \@ YYYY}+10}
where the field braces (ie '{ }') are created in pairs via Ctrl-F9.
Cheers

Signature
macropod
[MVP - Microsoft Word]
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>I am working in a WORD 2002 document to where I have a field that populates
> from an Access file. The mergefield "EXPIRATION" is automatically populated
[quoted text clipped - 12 lines]
>
> End Result: Destruction Date of September 2027