Problem Submit Via Job in BADI

Hello guys of new! I have other problem to execute a program Z since my BADI ME_PROCESS_PO_CUST in the method POST. It's not executing the program Z. Thank you a lot.
My code:

CONCATENATE

  'ME2XN'

  im_ebeln

  INTO v_jobname SEPARATED BY SPACE.

  CALL FUNCTION 'JOB_OPEN'

  EXPORTING

    jobname  = v_jobname

  IMPORTING

    jobcount = v_n

  EXCEPTIONS

    OTHERS   = 4.

  IF SY-SUBRC = 0.

    SUBMIT ZMMBI008

      WITH p_ebeln = im_ebeln

    VIA JOB v_jobname NUMBER v_n

    AND RETURN.

  ENDIF.

  IF SY-SUBRC = 0.

    v_fecha = SY-DATUM.

    v_hora  = SY-UZEIT + 30.

    CALL FUNCTION 'JOB_CLOSE'

    EXPORTING

      jobcount             = v_n

      jobname              = v_jobname

      sdlstrtdt            = v_fecha

      sdlstrttm            = v_hora

      strtimmed            = 'X'

    EXCEPTIONS

      cant_start_immediate = 1

      invalid_startdate    = 2

      jobname_missing      = 3

      job_close_failed     = 4

      job_nosteps          = 5

      job_notex            = 6

      lock_failed          = 7

      others               = 8.

  ENDIF.