Sort product attribute terms by custom column

<?php

add_action( 'rest_api_init', function () {
    function set_custom_sorting( $response ) {
        //var_dump([rand()]);
        $response->data['custom_order'] = (int) get_term_meta($response->data['id'], 'order', true);
        return $response;
    }

    add_filter( 'woocommerce_rest_prepare_product_attribute_term', 'set_custom_sorting', 10, 1);
    
    add_filter(
        'woocommerce_rest_product_attribute_term_collection_params',
        function( $params ) {
            $fields = ["custom_order"];
            foreach ($fields as $key => $value) {
                $params['orderby']['enum'][] = $value;
            }
            return $params;
        },
        10,
        2
    );

    // Εδώ κάπου χάθηκα
    add_filter(
        '__woocommerce_rest_product_attribute_term_query',
        function ( $args, $request ) {
            $fields = ["custom_order"];
            $order_by = $request->get_param( 'orderby' );
            if ( isset( $order_by ) && in_array($order_by, $fields)) {
                $args['meta_key'] = $order_by;
                $args['orderby']  = 'meta_value_num'; // user 'meta_value_num' for numerical fields
            }
            return $args;
        },
        10,
        3
    );

}); // rest_api_init