Hi lucky67,

The year aspect can be handled automatically, via a DATE field coded as:
{DATE \@ YY}
Depending on what you're doing, the individual invoice #s might be derived from a MERGEREC or MERGESEQ field.
Replicating the totals should be possible via field coding also, but I'd need to see the document to advise further on this (you could upload a copy). FWIW mailmerge always deletes bookmarks, so the replication needs to be performed as the merge executes.

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