You need a nested field like
{ ={ MERGEFIELD COFA:Cost }+{ MERGEFIELD COFA:Fine} }
where all the {} are the special field code braces you can enter using
ctrl-F9, { MERGEFIELD COFA:Cost } is the mergefield you would use to insert
the COFA:Cost value (it may need double quotes around COFA:Cost, for
example). Use Alt-F9 to see what's there already.
Peter Jamieson
>i am attempting to create a field on a word document by adding two mail
> merged fields
[quoted text clipped - 3 lines]
>
> exp: =sum(COFA:Fine+COFA:Cost)