I have this expression:
=IIf([Text131] Between 16 And 30,"Unacceptable",IIf([Text131] Between 31 And 42,"Marginal",IIf([Text131] Between 43 And 56,"Effective",IIf([Text131] Between 57 And 71,"Very Good",IIf([Text131] Between 72 And 80,"Outstanding","")))))
It works just fine, but I was...