我有一個代碼，我想在提交表單時以編程方式在 WooCommerce 中創建訂單。我希望我的代碼確定產品價格 - 所以覆蓋產品的默認價格。這可能嗎？不知道我的代碼哪里出錯了：// set some variables$user_id =rgar( $entry, '97' );$product_id = rgar( $entry, '71' );$quantity = rgar( $entry, '73' ); $price = rgar( $entry, '90' );$note = rgar( $entry, '53' );$product = wc_get_product($product_id);            $address = array( 'first_name' => rgar( $entry, '98' ), 'last_name' => rgar( $entry, '99' ), 'company' => rgar( $entry, '' ), 'email' => rgar( $entry, '83' ), 'phone' => rgar( $entry, '84' ), 'address_1' => rgar( $entry, '88.1' ), 'address_2' => rgar( $entry, '88.2' ), 'city' => rgar( $entry, '88.3' ), 'state' => rgar( $entry, '88.4' ), 'postcode' => rgar( $entry, '88.5' ), 'country' => rgar( $entry, '88.6' ), );// Create the order object             $order = wc_create_order();$order->set_customer_id( $user_id );$order->add_product( wc_get_product($product_id), $quantity, $prices);foreach ($order->get_items() as $item_key => $item ) {    $item->add_meta_data( 'Label', $note, true );}$order->set_address( $address, 'billing' );$order->calculate_totals();$order->update_status( 'pending payment', 'pending', TRUE); $order->add_order_note( $note );                                            $coupon_code = rgar( $entry, '105' ); $order->apply_coupon($coupon_code);                                                   break;    }}“90”是我的表單的字段 ID，其中包含我想在產品訂單中使用的價格。