Data request, checkout Sky

I'm having trouble receiving the data in the Checkout and Sky status URL. I'm using the CodeIgniter framework, and the data does not update the table.

Follow the code in my Controller Cart:

public function notify() {

    $order_number = $this->input->post('order_number'); 
    $mod_ship = $this->input->post('shipping_type'); 
    $name_ship = $this->input->post('shipping_name'); 
    $price_ship = $this->input->post('shipping_price'); 
    $cep_ship = $this->input->post('shipping_adress_zipcode'); 
    $dist_ship = $this->input->post('shipping_adress_district'); 
    $city_ship = $this->input->post('shipping_adress_city'); 
    $state_ship = $this->input->post('shipping_state'); 
    $adre_ship1 = $this->input->post('shipping_adress_line1'); 
    $adre_ship2 = $this->input->post('shipping_adress_line2'); 
    $number_ship = $this->input->post('shipping_adress_number');

    $data = array(
        'order_shipping' => $price_ship,
        'order_status' => $this->input->post('payment_status'),
        'order_tid' => $this->input->post('tid')
    );

    $myOrder = $this->store_model->upMyOrders($order_number, $data);

    $this->load->view('store/notify');
}

public function status() {   

    $order_number = $this->input->post('order_number'); 
    $data = array( 'order_status' => $this->input->post('payment_status'), );
    $myOrder = $this->store_model->upMyOrders($order_number, $data);
    $this->load->view('store/status');
}

The Notify and Status page contains the

<status>OK</status>

Store Model

public function upMyOrders($order_number, $data) {
  $query = $this->db->where(array('order_number' => $order_number))
  ->update('tb_store_orders', $data);
  return true;
}

I tried to $data within the model and it also did not work.

There is no change in the database and I do not get skype error message in the email ..