>>Hi,
>>
>>Don't mean to be picky but the correct sequence is:
>>
>> thisform.mycheck.value = 0 && 0-UnChecked 1-Checked 2-Mixed (Null)
>>
>>The 2 option means neither. It is a way to identify that the user did not know if it was true or false.
>>
>>Hope this helps.
>Thanks for correcting the typo.
>Dragan sorry for the delay, you might understand the problems related to this part of the world.
>2 is programmatically possible as help says. I get it as "I don't know the answer" but is different from .null. as user paid attention and filled an "answer". Complex to find a real implementation. If it was a number I could say 0 and .null. is quite different where "zero reporting" is important (ie: wind speed survey).
>Cetin

I understand all that, but still don't see the difference between the .null. and 2 (checked in the help file, it makes even a different visual representation of these two values).