Reporting Exits in BW

Question

Hi all ,
     I am new to writing customer exits in BW reporting.
     so need your help.
     There is a tcode RRMX which is a query designer.
     i have a characteristic value variable day interval
     (&0I_DAYIN&) after executing it will ask for date
      from and date to .. now there is a formula variable
     &nod& which should now contain the no. of days    after executing
     i found enhancements
RSR00001   BW: Enhancements for global variables in reporting      
RSR00002   BW: Virtual characteristics and key figures in Reporting
RSR00003   BW: Moving characteristic values                        
but not understanding which to use and how.
pls help.
Regards,
Tarang

Answer 1

Hi,
For variables you must use exit RSR00001.
Example coding (I didn't test it):
DATA: L_S_RANGE TYPE RSR_S_RANGESID.
DATA: LOC_VAR_RANGE LIKE RRRANGEEXIT.
TABLES: ZIT_BW_VARS.
CSSE I_VNAM.
  WHEN 'ZNUMDAY'.                                   "Your variable name (type cust. exit)
    IF I_STEP = 2.                                  "After variable popup
      LOOP AT I_T_VAR_RANGE INTO LOC_VAR_RANGE
              WHERE VNAM = '0I_DAYIN'.
        CLEAR L_S_RANGE.
        L_S_RANGE-LOW      = LOC_VAR_RANGE-HIGH - LOC_VAR_RANGE-LOW.
        L_S_RANGE-SIGN     = 'I'.
        L_S_RANGE-OPT      = 'BT'.
        APPEND L_S_RANGE TO E_T_RANGE.
        EXIT.
      ENDLOOP.
    ENDIF.
ENDCASE.
regards
Krzys