>Hi Bruce,
>
> I still have the problem - now my grid appears blank. May be I need to forget about this idea? :)

The first thing I see is that you need double quotes on the IIF...

> It still doesn't work... So, I didn't receive confidence :)

I mean, just dump the table into a test readonly grid, without any of the above code, and set a logical column controlsource as we discussed...it will work, I've done it many times...