Hi. I have a table with many columns of items. These columns have been given an "importance" score. I want to highlight dates with in each column that go out of date dependent on the "importance" score.

E.g column 3,4,6 all score an A grade for importance whilst 2,5,7,8 and 9 score a B. I want data in those columns rated A to turn red if 1 year old and B if 2 years old.

Thanks.