MyBB: Disable usergroups on page

    // Disabled usergroups
if($mybb->user['usergroup'] == 3 || $mybb->user['usergroup'] == 4 || $mybb->user['usergroup'] == 5 || $mybb->user['usergroup'] == 9 || $mybb->user['usergroup'] == 11)
{

}
else
{
     error_no_permission();
}