A follow-up question: I'm trying to do the same query but need to use a wildcard, in other words my fields aren't just filled with A or B and C but with A01 or A19 or B01 or B02, etc. I thought the asterisk would work as a wildcard, i.e.:
IIf(x='A*' OR x='B*' OR x='C*', True, False)
... but...