Need Help With My First Product

[Sema]

I did try the code but it dosn't work

PHP Code:

if(($vbulletin->options['on_off']) AND (!empty($vbulletin->options['profileid'])) AND ($userinfo['userid'] == $vbulletin->options['profileid']))
{
    standard_error('Sorry you are not allowed to view this profile');
} 


For more than a week and I am doing my best to make it work and I try to do it more than 300 times ya realy more than 300 times