I want to use good_template to set a cookie, so I also want to make sure that good_template can *only* be viewed as a result of form submission.

I can get the form submission results to display using $subject or whatever, but echoing $test when $test = $_GET['subject'] (or $_REQUEST or $POST or $_SESSION) gives me an empty result.

How are the vars sent to the good_template and can I check that they exist before setting a cookie?