In the screen attributes of screen field, set input = 0.
Before calling screen, set parameter id.
setPARAMETERID'ANL'field p_anln1-low.
CALL SCREEN100.
At PBO of the new screen, get parameter id.
MODULE status_0100 OUTPUT.
* Set PF Status and Title Bar
SET PF-STATUS 'STAT1'.
SETTITLEBAR'FUEL'.
getPARAMETERID'ANL'FIELD anln1.