session help

[eluser]dadamssg[/eluser]
how do i get this to redirect right? its a login. Im setting the session page variable for each page the user views and then when they login i want them to redirect to their current page. I know my session variable is holding a value i just cant seem to use it in the redirect

Code:

$page = $this->session->userdata('page');
redirect("mains/$page");