Passing Values between forms

Thought I'd pass along this little discovery. If you are implementing a UI with multiple webforms, I learned that global variables do not carry forward through the webform redirect. In my case I wish to pass along some SQL ids and other data to maintain integrity and keep things efficient. I discovered a pretty easy way to overcome the issue without saving/retrieving from a table. Simply pass the data elements as a form field and mark those fields with CSS visibility:hidden. This way the user can't modify the value and TA happily passes it forward to the next webform.