Checkboxes True/False -1/0 ... Lost In Translation

Hi all,

My client has an Access database where the value of a checkbox is stored in a field called Exclude_PropCount as -1 or 0. I am trying to get this form working online, but have been unable to successfully store this value in the db. I have set up a simple page to test it, and my relevant code is this:

sql_save = "INSERT INTO HVM_Data (VC, Exclude_PropCount) VALUES ('a9', '-1')"

con.Execute sql_save

set duplicateVC1 = db.Execute("SELECT Exclude_PropCount FROM HVM_Data WHERE VC = 'a9'")

response.write duplicateVC1("Exclude_PropCount")

But no matter whether I have '-1' or '0' in the INSERT statement, the response.write line always returns "False". And of course I've tried inserting "true" and "false", but it only accepts an integer.

As exceptionally bad timing would have it, my server is slightly fubar and I can't download the database to my PC to see what's actually being stored there, but looking at the above code, do you see anything I'm doing inherently *wrong*? This is my first time with checkboxes so I won't be surprised if that's the case. Hints?

Thanks!