sessions explained?

[jpodtbc]

hello.

i've searched this forum extensively for hints to figure out how to use 3.5 sessions. i've read through the vb_Session class code as well but i am still unable to simply set a session variable that is saved on the next page reload.

i accessed the set function in the class using $vbulletin->session->set(...) and the variable was inserted into the vars array but was not saved.

it appears that the only variables that are ever saved are in the db_fields array but i can't modify this for a general code plugin.

can someone please explain how to save a session variable without reverting to the session_start() mechanism?

thanks,
jason.