Hi lee,

Not possible using Find/Replace.

Also, when you're doing this, the field coding you'll need to use consists of pressing Ctrl-F9 to create a pair of field braces
'{ }' and filling in the space between these with MERGEFIELD "first name", so that you get '{MERGEFIELD "first name"}' - assuming,
of course, that the data source name you're using is in fact named 'first name'.

Cheers

Insert the mm field "first name", and copy it to the clipboard. The
clipboard's contents can now be referenced in the Replace with: field using
^c. Hence,

Find what:Tom
Replace with:^c

will replace Tom with the merge field that's stored in the clipboard.