[CLOSED] Login on different subdomains

[Bugfix]

Hello!
My site's URL is "www.mysite.com" - there I login to XF.
Now, I want my users to visit "subdomain.mysite.com" - but I am logged out.
Is there a way to tell XF that the login-cookie will work on any subdomain?
Found that:
http://xenforo.com/community/threads/xenforos-handing-of-cookie-domains.15260/
and tried:

$config['cookie'] = array(
   'prefix' => 'xf_',
   'path' => '/',
   'domain' => '.mysite.com'
);

But after deleting my cookies and re-login nothing changed.
Any help please?

Best regards
Harald

 

[Bugfix]

Never mind, got it.