Hi Brenda,

If you need the mergefields to work with both Office 2013 and earlier versions, and if the fields being evaluated are supposed to be numeric or Boolean, you could use something like:
{IF{={MERGEFIELD checkbox} \# 0} <> 0 "Yes" "No"}
Such a construction will force all the fields to be evaluated as numbers, including those that are empty or output a space when they should be empty.

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