Workflow: XML Container not updated

Question

Hallo Gurus!
I am starting a new workflow with SWW_WI_START_SIMPLE. After that i change some container values with following code:
*Workflow starten
  CALL FUNCTION 'SWW_WI_START_SIMPLE'
    EXPORTING
*   CREATOR                            = ' '
*   PRIORITY                           = SWFCO_NO_PRIO
      task                               = wa_ess_prozess-prozess_task
*   CALLED_IN_BACKGROUND               = ' '
*   DEADLINE_DATA                      = ' '
*   NO_DEADLINE_PARAMETERS             = ' '
  IMPORTING
*   WI_ID                              =
*   WI_HEADER                          =
*   RETURN                             =
*   WI_RESULT                          =
    swf_return                         = lwa_swf_return
    TABLES
      agents                             = it_swhactor
*   DEADLINE_AGENTS                    =
*   DESIRED_END_AGENTS                 =
*   LATEST_START_AGENTS                =
*   EXCLUDED_AGENTS                    =
*   NOTIFICATION_AGENTS                =
*   SECONDARY_METHODS                  =
*    wi_container                       = i_event_cont
CHANGING
   wi_container_handle                =  lc_container
  EXCEPTIONS
   id_not_created                     = 1
   read_failed                        = 2
   immediate_start_not_possible       = 3
   execution_failed                   = 4
   invalid_status                     = 5
   OTHERS                             = 6
  TRY.
      CALL METHOD lc_container->if_swf_cnt_element_access_1~element_set_value "if_swf_ifs_parameter_container~set
        EXPORTING
          name       = 'Vorgesetzter'
          qname      = 'Vorgesetzter'
          value      =  m_vorg
*                  unit       =
*                IMPORTING
*                  returncode =
    CATCH cx_swf_cnt_cont_access_denied .
    CATCH cx_swf_cnt_elem_access_denied .
    CATCH cx_swf_cnt_elem_not_found .
    CATCH cx_swf_cnt_elem_type_conflict .
    CATCH cx_swf_cnt_unit_type_conflict .
    CATCH cx_swf_cnt_elem_def_invalid .
    CATCH cx_swf_cnt_container .
  ENDTRY.
COMMIT WORK.
No excpetions are raised, but the container is not updated! Did i make something wrong?
Please help!
Thanks in advance.
Alex

Answer 1

Hallo Mike.
I think i should explain my requirements in more detail. I'm working on different Employee Self Service Scenarios. The User Interface is a Webdynpro which can be called form the Portal. In Background a Workflow is trigger and all following steps can be executed through the UWL.
For each Scenario it is possible to enter different date by the user. As the data is used in the workfow i would like to set it into the container by an generic Function Module for all scenarios. Each Process has a unique name and i made a table where the related information (Workflow task...) is stored.
But i think I already found a solution:
CREATE OBJECT cnt TYPE  cl_swf_cnt_container .
  TRY.
      CALL METHOD cnt->if_swf_cnt_element_access_1~element_set_value
        EXPORTING
          name  = 'Vorgesetzter'
          value = m_vorg.
*    unit       =
*  IMPORTING
*    returncode =
      CALL METHOD cnt->if_swf_cnt_element_access_1~element_set_value
        EXPORTING
          name  = 'Prozessdaten'
          value = <wa_proc_struc>.
*    unit       =
*  IMPORTING
*    returncode =
      CALL METHOD cnt->if_swf_cnt_element_access_1~element_set_value
        EXPORTING
          name  = 'ESS_KEY'
          value = lwa_ess_key.
*    unit       =
*  IMPORTING
*    returncode =
      CALL METHOD cnt->if_swf_cnt_element_access_1~element_set_value
        EXPORTING
          name  = 'PROCESS_NAME'
          value = i_ess_process.
*    unit       =
*  IMPORTING
*    returncode =
    CATCH cx_root .
  ENDTRY.
  CALL METHOD cl_swf_ifs_conversion_base=>to_ifs_xml
    EXPORTING
      source_container    = cnt
      import_param        = 'X'
      export_param        = 'X'
      local_elements      = 'X'
      no_system_elements  = ' '
      no_initial_elements = ' '
*      id                  = l_key-task
    IMPORTING
      ifs_xml_stream      = ifs_xml_container
      error_handle        = lv_excp.
  IF lv_excp IS NOT INITIAL.
    CALL METHOD lv_excp->if_message~get_text
      RECEIVING
        result = lwa_swf_return-message.
    e_return-type = 'E'.
    e_return-id   = 'ZESS'.
    e_return-number = lwa_swf_return-message.
    e_return-message  = lwa_swf_return-text.
    e_rc = 1.
    ROLLBACK WORK.
    EXIT.
  ENDIF.
*Workflow starten
  CALL FUNCTION 'SAP_WAPI_START_WORKFLOW'
    EXPORTING
      task                      = lwa_ess_prozess-prozess_task
*   LANGUAGE                  = SY-LANGU
      do_commit                 = ''
*   USER                      = SY-UNAME
*   START_ASYNCHRONOUS        = ' '
*   DESIRED_START_DATE        =
*   DESIRED_START_TIME        =
*   DESIRED_START_ZONLO       = SY-ZONLO
     ifs_xml_container         = ifs_xml_container
IMPORTING
   return_code               = l_subrc
*   WORKITEM_ID               =
*   NEW_STATUS                =
TABLES
*       input_container           = i_event_cont
   message_lines             = lit_messag
   message_struct            = lit_messstruc
   agents                    = it_swhactor
With this technique i am now able to set dynamic structures (e.g. <wa_proc_struc>) to the Container.
Thanks.
Alex