Help with vB Logout process

[cshinteractive]

mysite: http://www.mydomain.org/
myforums: http://bbs.mydomain.org/forums/

Integrating mysite with myforums (vBulletin 3.5.4), login process is working nicely thanks to the following post?

https://vborg.vbsupport.ru/showthread.php?t=108026

Once a visitor logs in to mysite they are seamlessly logged in to myforums. However, my logout process has a little problem, it doesn?t work.

Step 1. mysite logout script completes then redirects to myforum logout script

Step 2. myforum logout script:

<?php
chdir('c:/htdocs/bbs.myforums.org/forums');
require_once('c:/htdocs/bbs.myforums.org/forums/global.php');

$url = "http://bbs.myforums.org/forums/login.php?" . $session[sessionurl] . "do=logout&amp;logouthash=" . $vbulletin->userinfo['logouthash'];

header("Location: $url");
?>

I get the following vB message:

An error occurred while attempting to log you out. Click here to log out.

Does anyone know why?

Thanks for your help in advance

ever mind, I found the issue

$url = "http://bbs.myforums.org/forums/login.php?" . $session[sessionurl] . "do=logout&amp;logouthash=" . $vbulletin->userinfo['logouthash'];

should be...

$url = "http://bbs.myforums.org/forums/login.php?" . $session[sessionurl] . "do=logout&logouthash=" . $vbulletin->userinfo['logouthash'];