WP 1C — hook атрибутов

add_action(
    'itglx_wc1c_product_option_custom_processing_2f582177-ae22-11ec-babb-d8bbc10dcaeb',
    function (int $productId, SimpleXMLElement $property) {
        $value = html_entity_decode((string)$property->Значение);
        update_field('composition-table', $value, $productId);
    },
    10,
    2
);