microsoft.public.word.vba.general

Hi,
I have developed a document for a client in which 13 rows of fields with 3
columns each auto-calculate into 3 separate totals. The client is now
requesting that, if they enter zero into the first column of any row, the
other 2 columns are immediately updated to be zero as well. However, this
should only happen with the number zero. How can I program the fields to do
this and still auto-calculate?

Karen