Total of Daily Balances for transaction PTFMLA

Question

Dear all
I'm working with a class, to modify the method, but I'm having trouble.
We're using the ECC6.0 system and the class is ZCL_IM_FMLACUML from SAP. When drilling down using SE80 object list, you go from ZCL_IM_FMLACUML to Methods to IF_EX_PTCCE_DIST_DATA to method DISTRIBUTE_DAILY_BALANCE.
The code I'm trying to add is:
method IF_EX_PTCCE_DIST_DATA~DISTRIBUTE_DAILY_BALANCE.
  DATA: "wtab LIKE LINE OF IM_CONTRACT_DAILY_BALANCES,
        wtab TYPE PTR_CONTRACT_TES,
        itab TYPE TABLE OF PTR_CONTRACT_TES,
        tes_tab TYPE TABLE OF PTT_TES,
        tes_wa LIKE LINE OF wtab-tes,
        sum_hours TYPE anzhl.
  CLEAR sum_hours.
  LOOP AT IM_CONTRACT_DAILY_BALANCES INTO wtab.
   tes_tab = itab-tes[].
    LOOP AT wtab-tes INTO tes_wa WHERE ztart = 'Z020'.
      sum_hours = sum_hours + tes_wa-anzhl.
    ENDLOOP.
  ENDLOOP.
      tes_wa-ztart = 'Z022'.
      tes_wa-anzhl = sum_hours.
  LOOP AT itab INTO wtab.
   APPEND tes_wa TO itab-tes.
   MODIFY IM_CONTRACT_DAILY_BALANCES FROM itab transporting tes.
  ENDLOOP.
  BREAK-POINT.
endmethod.
The error is that the field IM_CONTRACT_DAILY_BALANCES cannot be changed.
Any ideas how I can fix this. The table is a 3D table, and I only want to append one row to the table TES, which is inside the table IM_CONTRACT_DAILY_BALANCES.

Answer 1

Hi,
mhh...
The sense of importing parameters is directly this! To prevent thas someone change the values.
If i implement a parameter as import and not as changing, i will not that someone change of the passed value...
You need maybe a different exit...
Regards,
Gianpietro