Thank you both for your replies, very helpful. But now what if we throw in a kink. If we added a rating column and A, B, or C will be the value. Depending on the rating the scores for X, Y, Z will vary. For instance the value of X would be 30-40 for A, 25-35 for B and 20-30 for C. The scores for Y and Z would follow in the same manner.