vB login/bridge question

[transparentb]

I am trying to integrate vBulletin's login with our CMS login. In the login extension I am trying to get it to mimic the functionality as if you clicked the 'Remember Me' checkbox when logging onto vb's login page.

I am setting the cookies that vb uses and have verified that my cookies look exactly like the cookies that vb generated. But for some reason, vbulletin logs out all of our users based on the session expiration timing. I have looked at the data being inserted into the session table and mine matches what is insert by vb.

I am at a complete loss as to why this isn't working and vb won't leave our users logged in. Any insight would be fantastic. Thanks in advance for your help.

In case it helps, cookie calls:

setcookie($cookie_prefix.'sessionhash', $now, 0, "/", $base_forum_url, 0, true);
   setcookie($cookie_prefix.'userid', $userid, time()+60*60*24*365, "/", $base_forum_url, 0, true);
   setcookie($cookie_prefix.'lastvisit', $timenow, time()+60*60*24*365, "/", $base_forum_url, 0, false);
   setcookie($cookie_prefix.'lastactivity', 0, time()+60*60*24*365, "/", $base_forum_url,0, false);
   setcookie($cookie_prefix.'password', $password, time()+60*60*24*365, "/", $base_forum_url, 0, true);
$base_forum_url = .ourwebsite.com