total number of posts using facebook graph api

I want to get total number of posts done by admin , here is a ptv sports page id , i tried my page id even , it is returning Data:array[object] = length 25, i have displayed it but if posts are 400 then what should i do do manage uninformed posts and show all of them

        function p_post() {
        FB.api("/209652442394600?fields=posts{admin_creator}", function (response) 
             {   
              var t = response.posts.data.length;  });
                                   }

the answer by default is 25, manage it