carrying a global variable from stack to sub stack

[Admin]

Hello all, 

How do you carry a global variable from one stack to a
substack? 

I have this set of commands on every page of every stack in
my project: 

on opencard
 --Create a global variable for the db
 global
dbID
 global curUserID
 global UN

 put numtochar(39) into SQ

I then
proceed to login to the database (works fine normally) and then access
whatever data I need.

I just created a substack called CV with three
pages - pgCV1, pgCV2 and pgCV3

I need the login credentials of the user
to carry over so the fields on these pages can be populated with the
existing data on the database.

The important variable is dbID and
curUserID

What do I need to do, other than the global command, to make
this happen?

Mike