This event is only used in association with time-dependent tables/views. It occurs as soon as an input in the sub-screen is detected. Other activities can now be performed, for example,
fill hidden fields update user internal tables.
update user internal tables.
In contrast to other routines, the individual routine must have two parameters of type D. Parameter 1 represents the start date, parameter 2 the end date.
There are no standard routines for this event.