Search help using user exit depending on values entered on selection screen
I have a selection screen with 4 select options
Prod hierarchy 1
Prod hierarchy 2
Prod hierarchy 3
Prod hierarchy 4
Now if i enter a value in Prod hierarchy 1
& press F4 help on the Prod hierarchy 3 it should give me the values only corresponding to Prod hierarchy 1.(i.e. filter the values)
I have to achieve this only using Search help user exit & not by changing the program.
I am unable to get Prod hierarchy 1 value entered in selection screen in the user exit.
Pls let me know if there is any way of getting the values filtered out using Search help user exit .
your help will be appreciated