php - Laravel 4 Cookie Key but no Value -

hey having trouble cookies in laravel 4.

i using rest client test api working on , wanted add layer of authentication went according cookies.

in route, put in following code filter it:

route::filter('check_cookie', function(){  var_dump(cookie::get()); });

i see var dump happening weird thing see cookie key not value. see in dump array like:

array(1) {  ["api_cookie"]=>   null }

any idea why? thanks!

My