Hi Yeong-Chul,
are you sure about events you have mentioned? In both of them you don't have access to status of particular fields. Event AUTH1 is raised only once during opening RE contract and DCUAC is raised twice same time.
AUTH1 - an event to authorize some activity on RE object (example function: RECN_RECN_EVENT_AUTH1)
DCUAC - an event to set or change GUI status functions for current screen (example function: RECN_RECN_EVENT_DCUAC)
Regards,
Jakub.