@Fotis: not really. It's a formula I found, copied and adapted. It worked for the 1 marker but not the 0 marker. The reason being that the 1 was numeric and the 0 was text (we how it is left aligned. I remedied that in my test by using"0" rather than just 0 in the IF statement.

I haven't tried your version yet; it may well be a superior option.

Regards, TMS