Hide input field in dialog

Dear Expert,

I tried to hide input field in dialog program using this code below.

But somehow when I make it invisible, the value in that field is also gone.

How do you maintain the value in that input field when you make it invisible?

thanks

IF screen-name = 'FIELD1'.
       screen-INVISIBLE = '1'.
       Screen-active = 0.
       MODIFY SCREEN.
       CLEAR screen.
 ENDIF.