aren't cookies global?

Well, I managed to get the userid into a session in the other controller. And when I look at the $_SESSION variable (I am stopped in the 2nd controller) in phpStorm, my $_SESSION['userid'] appears to be there. So here is my callback before insert

$crud->callback_before_insert(array($this,'add_email'));

and the call back

  function add_email($post_array){
       $post_array['email']=$_SESSION['userid]'];
       $post_array['email'].=$_SESSION['userid]'];
       return $post_array;
   }

But I can't seem to get the $_SESSION into my post array. When I breakpoint at the return statement, $_SESSION['userid'] is null. Anyone know why?

proof that an old dog can learn new tricks