>Michelle,
>
>You are missing a set of ()s IIF is a built-in function.
>
>> "IIF CURVAL(EVAL(THIS.controlsource)) <> OLDVAL(EVAL(THIS.controlsource)), ;
>> RGB(255,0,0), RGB(0,0,0))"

I did some experimenting, and if I put the statement directly in a column, and comment out the above, it still does nothing. That makes me wonder if it isn't the view that's interfering...

-Michelle