When ABAP screen switching, refresh the previous screen

In the program , We may encounter this scenario , In the second screen, the data is operated , When returning to the previous screen , The data in the previous screen should be retrieved and refreshed , But in leave to screen 0. Then it will be executed to CALL SCREEN Later code , So the refreshed code should be written CALL SCREEN after

CALL SCREEN 200.
PERFROM GET_DATA. // Re fetching
PERFROM refresh_screen. // Refresh 100 The screen