Check out the examples in the demo app, dude - all will be revealed!
FWIW, web programming is different from desktop programming. Grab variables from forms or querystrings like the following (from the demo):
lcCompany = UPPER(NVL(oRequest.Form("txtCompany"),)) &&retrieve form field from HTML
lnStart=VAL(oRequest.querystring("page")) &&retrieve value passed on the URL
or, if you need for variables to hang around, put them in the session object:
lcOrder=oSession.VALUE("thissort") &&retrieve value from the session object
JUST look at the examples and try to learn web programming...