David, et.al.

I went back and looked at the code again. What didn't work:

loColumn.DynamicFontBold = "[THIS.gnRecNo == RECNO(THIS.RecordSource)]"
loColumn.DynamicFontBold = "[THIS.PARENT.gnRecNo == RECNO(THIS.PARENT.RecordSource)]"
loColumn.DynamicFontBold = "'IIF(THIS.PARENT.gnRecNo = RECNO(THIS.PARENT.RecordSource), .T., .F.)'"

And what did work:

loColumn.DynamicFontBold = "THIS.gnRecNo == RECNO(THIS.RecordSource)"

Note the clever placement of single quotes and brackets in the code that didn't work.

Nothing like working too hard or making it more complex than it needs to be.

Regards,
Thom C.