ใช้ modal แล้วจะให้ jquery หา ค่า ใน modal แล้วส่งไปอีกหน้า แต่ทำแล้ว ค่าที่ได้ ไม่เจอ ตต้องทำไงหรอครับ

echo"
<div class='modal fade' id='$nId_PP' role='dialog'>
    <div class='modal-dialog'>
         <div class='modal-content'>
               <div class='modal-header'>
                     <button type='button' class='close' data-dismiss='modal'></button>
                      <h4 class='modal-title'>โอนสินค้าเข้าคลัง</h4>
               </div>
               <div class='modal-body'>
                     <form action='javascript:;' method='GET' class=' form-group form-horizontal' role='form'>
                     <input type='text' name='nId_PP' class='nId_PP' value= '$nId_PP'>
                     <div class='group'>
                         <div class='row'>
                               <label for='nId_store' class='col-sm-3 col-md-4' style='text-align:right'>คลังสินค้า</label>
                                <div class='col-sm-5 col-md-5'>";
                                     $sql = "
                                         SELECT
                                            tb_store_warehouse.nId_store,
                                            tb_store_warehouse.cStore
                                         FROM
                                            tb_store_warehouse
                                         WHERE
                                            tb_store_warehouse.nId_kong = '".$_SESSION['nId_kong']."'
                                     ";
                                     $conf = array(
                                        "id" => "nId_store",
                                        "name"=>"nId_store",
                                        "class"=>"form-control nId_store",
                                        "value"=>"nId_store",
                                        "text"=>"cStore"
                                    );
                                    $result = $db->dropdown($sql, $conf);
                                    echo"
                                           </div>
                                         </div>
                                      </div>
                                     <div class='modal-footer'>
                                           <button type='submit' class='btn btn-success bn_suc'>บันทึก</button>
                                     </div>
                                 </form>
                             </div>
                         </div>
                     </div>
                  </div>";

$(function(){
        $(".bn_suc").click(function(){
            var nId_PP = $(this).closest('div#nId_pp').find('.nId_PP').val();
            var nId_store = $(this).closest('div#nId_pp').find('.nId_store').val();
            console.log(nId_PP);
            console.log(nId_store);
            $.post("status.php",
                {
                    nId_PP : nId_PP,
                    nId_store : nId_store
                },function(data){
                    setTimeout(function() {
                      swal({
                        title: data,
                        type: "success"
                        },
                        function(){
                            window.location = 'purchase_list.php';
                        });  
                    }, 1000);
                }
            );
        });
    });