Unifaun - SecurityDeclaration

functions.php

<?php
/**
 * @snippet       WooCommerce -Unifaun - Set Customs Security printset 
 * @author        Redlight Media AB / Christopher Hedqvist
 * @compatible    WooCommerce 3.9.0
 */
function redlight_unifaun_customs_security( $customsDeclaration, $shipment, $order_id) {
    //$order = new WC_Order($order_id);
    if( 'BREKI' === $shipment['service']['id'] ){
    	$customsDeclaration['printSet'] = ['SECURITY'];
	}
    return $customsDeclaration;
}
add_filter('ac_wc_unifaun_shipment_customs_declaration', 'redlight_unifaun_customs_security', 10, 3 );