How to put this in the menu?

[محروم.كوم]

I made this little screen scrape to see how many users there are in my (external) Videochat:

PHP Code:

The link to the Videochat in the header-template is:
Code:

Videochat

I would like to put the PHP in there so it shows up like 'Videochat (4)' with the '4' being the amount of users in the chat. I know how to put the brackets around the PHP but I can't just copy/paste the PHP in there because the number simply won't show up.

So how do I do this?

Thanks in advance! __DEFINE_LIKE_SHARE__