Example of Function Module in Subroutine

REPORT ZTEST_11.

parameters :name(20) type c.
data:begin of itab occurs 0 ,
value(20),
end of itab,
choise like sy-tabix.
at selection-screen on value-request for name.
perform f4 changing name.

*&---------------------------------------------------------------------*
*& Form F4
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* <--P_NAME text
*----------------------------------------------------------------------*
FORM F4 CHANGING P_NAME.

itab-value = 'sap'.
append itab.
itab-value = 'sap1'.
append itab.
itab-value = 'sap2'.
append itab.
CALL FUNCTION 'POPUP_WITH_TABLE_DISPLAY'
EXPORTING
ENDPOS_COL = 40
ENDPOS_ROW = 12
STARTPOS_COL = 20
STARTPOS_ROW = 5
TITLETEXT = 'Select an ID'
IMPORTING
CHOISE = choise
TABLES
VALUETAB = itab
EXCEPTIONS
BREAK_OFF = 1
OTHERS = 2.
CHECK choise > 0.
clear screen.
READ TABLE itab INDEX choise.
name = itab-value.
IF SY-SUBRC <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.




ENDFORM. " F4