Thanks very much for your messages Shane and Don. I can now add one row up,
ie the Ys but can't seem to get a formula right to ask for 3 codes to add up
(OC, N, NC) even though I have a mound of printed help info around me! May
give up for tonight but if you know.... I would welcome your help again.
Thanks. (Its the first time I've written in but like to look through queries
and have learnt info - mainly that I know a lot less than I thought I did!)