$eventManager = Bitrix\Main\EventManager::getInstance(); $eventManager->registerEventHandlerCompatible("catalog", "OnCondCatControlBuildList", "catalog", "CCatalogCondCtrlIBlockFields", "GetControlDescr", 200); $eventManager->registerEventHandlerCompatible("catalog", "OnCondCatControlBuildList", "catalog", "CCatalogCondCtrlIBlockProps", "GetControlDescr", 300);