I'm creating a guest list.
On this list, persons living at the same address are given a common ID
number, unique to that address. I enter this number in column A. For
readability I want records for even-numbered households to have a
format of my choosing.

I tried using condidtional format by selecting all the rows and
entering the formula like this:
Formula is =ISEVEN($A1)

This results in an error: "You may not use references to other
worksheets or workbooks for Conditional Formatting criterea".

What am I doing wrong?


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