Hiding Screen fields in a Report selection screen

Question

Hi Experts,
I have a requirement to hide/disable  screen fields in a report selection screen when the user clicks on some radio buttons .
Here is the scenario,
1) There are 4 radio buttons four radiobuttons in one group on the selection screen:--  
Block no:1
PARAMETER: r_not  TYPE c RADIOBUTTON GROUP a1 DEFAULT 'X'.
PARAMETER: r_prgs TYPE c RADIOBUTTON GROUP a1.
PARAMETER: r_remv TYPE c RADIOBUTTON GROUP a1.
PARAMETER: r_noresp TYPE c RADIOBUTTON GROUP a1.
2) Based on the user clicking/selecting the radio buttons no.2,3 nad 4 i need to hide some fields in the other selection block
in the selection screen.The parameters are as follows:
Block no:2( These fields need to be hidden/disabled)
PARAMETER: r_occ(3) TYPE c OBLIGATORY DEFAULT '1'.
PARAMETER: r_and TYPE c RADIOBUTTON GROUP g1.
PARAMETER: r_or  TYPE c RADIOBUTTON GROUP g1.
PARAMETER: r_days(3) TYPE c OBLIGATORY DEFAULT '1'.
Thanks

Answer 1

Contd.....
AT SELECTION-SCREEN.
  CASE SSCRFIELDS-UCOMM.   
      "When Customer button is clicked set flag 1
    WHEN 'FC01'.
      L_FLAG = '1'.
      "When Sales Order button is clicked set flag 2
    WHEN 'FC02'. "Sales order
      L_FLAG = '2'.
      "When Execute button is clicked set flag 4
    WHEN OTHERS.
      L_FLAG = '4'.
  ENDCASE.
AT SELECTION-SCREEN OUTPUT.
CASE L_FLAG.
    WHEN '1'.  "When Customer button is clicked
      LOOP AT SCREEN.
        "Set the Production and Customer Block as inactive
        IF  SCREEN-GROUP1 = 'BL1' OR SCREEN-GROUP1 = 'BL3'.
          SCREEN-ACTIVE = '0'.
          MODIFY SCREEN.
        ENDIF.
      ENDLOOP.
    WHEN '2'. "When Sales Order button is clicked
      LOOP AT SCREEN.
        "Set the Production and Customer Block as inactive
        IF  SCREEN-GROUP1 = 'BL1' OR SCREEN-GROUP1 = 'BL2'.
          SCREEN-ACTIVE = '0'.
          MODIFY SCREEN.
        ENDIF.
      ENDLOOP.
    WHEN '3'.   "When Refresh button is clicked
      LOOP AT SCREEN.
        "Set the all Blocks as active
       IF  SCREEN-GROUP1 = 'BL2' OR SCREEN-GROUP1 = 'BL3' OR SCREEN-GROUP1 = 'BL1'.
          SCREEN-ACTIVE = '1'.
          MODIFY SCREEN.
        ENDIF.
      ENDLOOP.
    WHEN OTHERS."When Execute button is clicked
      "Set the Sales order and Customer Block as inactive
      LOOP AT SCREEN.
        IF  SCREEN-GROUP1 = 'BL2' OR SCREEN-GROUP1 = 'BL3'.
          SCREEN-ACTIVE = '0'.
          MODIFY SCREEN.
        ENDIF.
      ENDLOOP.
  ENDCASE.
ENDFORM.