I_vnam does not hold value after i_step is 1

Question

Hi all!
I have a characteristic 0calday. For my report, i have a customer exit which has the following requirement:
If only one value is entered for 0calday, I have to populate this value as 'From' value for 0calday and system date should be in the 'To' value of 0calday so as get data for the range value entered and current date.
I tried  using the following code:
CASE i_vnam.
WHEN 'ZC_CADAT'.
CASE i_step.
   WHEN 3.
     READ TABLE I_T_VAR_RANGE INTO L_S_VARIABLE_RANGE INDEX 2.
       IF SY-SUBRC = 0.
         IF L_S_VARIABLE_RANGE-LOW IS NOT INITIAL
         AND L_S_VARIABLE_RANGE-HIGH IS INITIAL.
            l_s_range-sign = 'I'.
            l_s_range-opt  = 'BT'.
            L_S_RANGE-LOW  = L_S_VARIABLE_RANGE-LOW.
            l_s_range-high = SY-DATUM.
            APPEND l_s_range TO e_t_range.
         ENDIF.
       ENDIF.
  ENDCASE.
ENDCASE.
When I was debugging this is what i found:
I_VNAM holds ZC_CADAT initially untill i_step =1.
the variable screen appears and I 've entered only one value for variable ZC_CADAT.
Execution was fine till here. after my input,
Ideally, I_VNAM should hold the value ZC_CADAT, and I_STEP should be 2.
But both of them are not working. Both I_Vnam does not hold ZC_CADAT and I_Step is now 3.
Please help me. I am unable to work this out.
Points will be awarded!!!
Thanks,
Sri

Answer 1

Hi,
I was using a different customer exit variable to capture the input and pass that value to other CE variable with i_step = 2.
This solved it.
If this was not ur case, let me know the problem background
Thanks
Sri