>What to reproduce?
>The problem very clear.
>or example' go to your 'windows explorer', mark sum file,property.
>You will se a hidden check box, it's mark with 'V' if your file is hidden and it's empty if your file not hidden.
>now select two files, one is hideen and one is not hidden, go to property what will you see in the 'hidden' check box? square in the middle.
>that is what I see in my check boxes!

Oh you mean either you used numeric with value gt 1 or allowed null and value is null. It's triplestate value. In sample I sent in previous message change it to allow null, and values to null or field to numeric and values to 2. Still when "Mark All" clicked you get the ".t./1" result.
Cetin