Set and get values in session - Web Applications with PL/SQL

Question

I have two web applications: a based in web pl/sql and another in jsp My login web page is in pl/sql from this application to access through a link on my jsp page. I want to keep the user session connected in web pl/sql and then I take it in my application jsp. In jsp for set and get values session I use:

HttpSession session = request.getSession();
session.setAttribute("userlogin", userlogin);
session.getAttribute("userlogin");

How do I do the same in web pl/sql to set and get values in session.

Thanks for your help