Userexit variables in the report designer

Question

I want to use a query with userexit variables where 1 variable is derived from another variable in the report designer. This does not seem to work, behavious seems to be as follows:
1) when variables are derived from other variables they are filled in step 2 of the variable userexit. Variables filled in step 2 have no effect on the query: everything is selected
2) if the derived variables are mandatory, they even cause a dump saying the variable is empty
3) if variables are filled in step 1 (thus before the selection screen), they do impact the selection. The problem is that step 1 is too early to have access to the other variables.
How can I derive variables from other variables when using the report designer?
Thanks in advance for your answers,
Best Regards,
Filip Ledoux

Answer 1

Hi,
For example if you want use value from variable ZVAR_02 (manual entry) in variable ZVAR_01 (user exit) you can use similar code:
DATA: L_S_RANGE TYPE RSR_S_RANGESID.
  DATA: LOC_VAR_RANGE LIKE RRRANGEEXIT.
  CASE I_VNAM.
   WHEN 'ZVAR_01'.
    IF I_STEP = 2.
      READ TABLE I_T_VAR_RANGE INTO LOC_VAR_RANGE
           WITH KEY VNAM = 'ZVAR_02'.
      IF SY-SUBRC = 0.
        CLEAR L_S_RANGE.
        L_S_RANGE-LOW      = LOC_VAR_RANGE-LOW.
        L_S_RANGE-SIGN     = 'I'.
        L_S_RANGE-OPT      = 'EQ'.
        APPEND L_S_RANGE TO E_T_RANGE.
        EXIT.
      ENDIF.
    ENDIF.
ENDCASE.
Variable ZVAR_01 shouldn't be ready to input.
Krzys