[Zope] cookie scope?

Hang on this is kinda confusing: I set a cookie in a script in the top-level folder. Then move to a sub-folder and change the cookie value. Then I go back to the top-level folder and change the cookie. Lastly, I go back to the sub-folder and it has kept the value from the previous sub-folder's change not the last top-level folder change. So it's acting like I have created 2 cookies: 1 at the top-level, and 1 at the sub-folder level. Anyone ideas? Thanks!