Update value of current field by firing key-f3 is not working

Question

oracle 8i
hey,
I implemented a key-f3 trigger wich should insert the sysdate into the current field.
:ab.von := sysdate;
this works perfectly. but when I want to write a standart trigger, wich I could copy in every formfield like the example, it doesnt work and the message frm 41803 is shown, "no prefius datarecord aviable, from wich could be copied
declare new_date date;
begin
if Get_Item_Property(:system.cursor_item, DATATYPE)='DATE' then
Copy( to_date(sysdate,'DD.MM.JJ'), :System.Cursor_Item);
end if;
end;
could anyone tell me where I have my mistake or if there is a easier way to solve the problem
mfg
robert

Answer 1

ok, it works
what I dont understand is, what for is then the trigger key-f3, when is it firing? and what is the use?
how could I make a trigger to use for example strg+d to insert the sysdate or any other key
where do I find the programm oracle terminal?
what F-? keys are not used witch I could use?
thanks anyway, my function is working with your information
mfg
robert