> But if I say 
> vTest = Colname
> I get zero regardless of whether the form is in
> enter or edit mode.

I agree that there's a problem with distinguishing
NULLs with ZERO set ON.  I hit the same problem about
a year ago (I'll be on client site next Tuesday and
will try to figure out how I solved the problem -- but
I don't recall it was a particularly satisfactory
solution).

However, if the above statement were to move the NULL
value from ColName to vTest, then you would be
introducing a further inconsistency -- because the
expression ColName (although a very simple expression,
an expression none-the-less) would not be evaluated
according the logic of SET ZERO ON.  

It's a conundrum what to do about it.  As I said, I'll
try to see what I did about the issue when I dealt
with it a year ago.
--
Larry

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