Generate Function But Can't Call It? --Reload

Question

hi all,
I have program like below, but the SAP system tell me "Call Function NOT FOUND" when lv_idx = 2.
How to make it work?
*& Report  Z_TEST_DYN
REPORT  z_test_dyn.
DATA fname TYPE rs38l-name.
DATA:
      lt_code TYPE TABLE OF rssource,
      lv_idx TYPE n LENGTH 3 VALUE 0.
APPEND 'write: /''test''.' TO lt_code.
DO 10 TIMES.
  ADD 1 TO lv_idx.
  CONCATENATE 'Z_TEST_' lv_idx INTO fname.
  CALL FUNCTION 'RS_FUNCTIONMODULE_INSERT'
    EXPORTING
      funcname                      = fname
      function_pool                 = 'ZIF_FGDYN'
*     INTERFACE_GLOBAL              = ' '
*     REMOTE_CALL                   = ' '
      short_text                    = 'TEST'
*     SUPPRESS_CORR_CHECK           = 'X'
*     UPDATE_TASK                   = ' '
*     CORRNUM                       = ' '
*     NAMESPACE                     = ' '
*     SUPPRESS_LANGUAGE_CHECK       = 'X'
*     AUTHORITY_CHECK               = 'X'
*     SAVE_ACTIVE                   = 'X'
*     NEW_SOURCE                    =
*     EXCEPTION_CLASS               = ' '
*     SUPPRESS_UPGRADE_CHECK        = ' '
*   IMPORTING
*     FUNCTION_INCLUDE              =
*     CORRNUM_E                     =
   TABLES
*     IMPORT_PARAMETER              =
*     EXPORT_PARAMETER              =
*     TABLES_PARAMETER              =
*     CHANGING_PARAMETER            =
*     EXCEPTION_LIST                =
*     PARAMETER_DOCU                =
     SOURCE                        = lt_code
   EXCEPTIONS
     double_task                   = 1
     error_message                 = 2
     function_already_exists       = 3
     invalid_function_pool         = 4
     invalid_name                  = 5
     too_many_functions            = 6
     no_modify_permission          = 7
     no_show_permission            = 8
     enqueue_system_failure        = 9
     canceled_in_corr              = 10
     OTHERS                        = 11
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  CALL FUNCTION 'FUNCTION_EXISTS'
    EXPORTING
      funcname                 = fname
*   IMPORTING
*     GROUP                    =
*     INCLUDE                  =
*     NAMESPACE                =
*     STR_AREA                 =
   EXCEPTIONS
     function_not_exist       = 1
     OTHERS                   = 2
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  CALL FUNCTION 'SBUF_SYNCHRONIZE'
    EXCEPTIONS
      c_func_error = 1
      OTHERS       = 2.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  CALL FUNCTION 'FUNCTION_EXISTS'
    EXPORTING
      funcname                 = fname
*   IMPORTING
*     GROUP                    =
*     INCLUDE                  =
*     NAMESPACE                =
*     STR_AREA                 =
   EXCEPTIONS
     function_not_exist       = 1
     OTHERS                   = 2
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  CALL FUNCTION fname      <<<<<<<<<< Error when twice here
    TABLES
      et_table = lt_a.
ENDDO.
regards,
jkchen
Edited by: jkchen on Nov 26, 2010 7:13 AM
Edited by: jkchen on Nov 26, 2010 7:15 AM

Answer 1

Hi,
check the value from fname after
CONCATENATE 'Z_TEST_' lv_idx INTO fname.
It could be better to go on with the last fuba, only if the fuba before is succesfully.
CALL FUNCTION 'FUNCTION_EXISTS'
    EXPORTING
      funcname                 = fname
  IMPORTING
    GROUP                    =
    INCLUDE                  =
    NAMESPACE                =
    STR_AREA                 =
   EXCEPTIONS
     function_not_exist       = 1
     OTHERS                   = 2
  IF sy-subrc  0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
if sy-subrc eq 0. 
CALL FUNCTION fname      <<<<<<<<<< Error when twice here
    TABLES
      et_table = lt_a.