you would change:
& [note date 9] & " - " & [nota 9]& "new_line" & [note date 10] & " - " & [nota 10] & "new_line" &
to:
& iif(trim("" & [nota 9]) = "","",[note date 9] & " - " & [nota 9])& vbcrlf & iif([nota 10]) = "","",[note date 10] & " - " & [nota 10]) & vbcrlf &