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.

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Hope this helps
Doug Robbins - Word MVP
> Is it possible to declare variables and set them equal to the value of merge
> fields during a mail merge?