File: //var/www/html/ielts-store/wp-content/plugins/automatewoo/includes/Variables/Order_Meta.php
<?php
// phpcs:ignoreFile
namespace AutomateWoo;
if ( ! defined( 'ABSPATH' ) ) exit;
/**
 * @class Variable_Order_Meta
 */
class Variable_Order_Meta extends Variable_Abstract_Meta {
	function load_admin_details() {
		parent::load_admin_details();
		$this->description = __( "Displays the value of an order custom field.", 'automatewoo');
	}
	/**
	 * @param $order \WC_Order
	 * @param $parameters array
	 * @return string
	 */
	function get_value( $order, $parameters ) {
		if ( $parameters['key'] ) {
			return (string) $order->get_meta( $parameters['key'] );
		}
		return '';
	}
}