MailMergeFields.AddMergeSeq (Word)
Adds a MERGESEQ field to a mail merge main document. Returns a MailMergeField object.
A MERGESEQ field inserts a number based on the sequence in which records are merged (for example, when record 50 of records 50 to 100 is merged, MERGESEQ inserts the number 1).
AddMergeSeq (Range)
Range: The location for the MERGESEQ field.
Dim rngTemp As Range
Set rngTemp = ActiveDocument.Content
rngTemp.Collapse Direction:=wdCollapseEnd
ActiveDocument.MailMerge.Fields.AddMergeSeq Range:=rngTemp
rngTemp.InsertAfter "Sequence Number: "