Change document for user is not updating

Hi All,

I have written a simple Zprogram to unlock a particular user.

But the issue is that its not showing any log for that particular user in TCODE SU01-->Change document for user .

Please let me know if i am missing something from my side.

The code is as below:-

   REPORT  ZENF_USER_UNLOCK.

tables:USR02.

parameters:lv_user like USR02-bname default 'SLDDSUSER' obligatory,
           lv_mandt like USR02-mandt default '001' obligatory.

CALL FUNCTION 'ENQUEUE_E_TABLE'
  EXPORTING
    MODE_RSTABLE   = 'E'
    TABNAME        = 'USR02'
  EXCEPTIONS
    FOREIGN_LOCK   = 1
    SYSTEM_FAILURE = 2
    OTHERS         = 3.
IF SY-SUBRC <> 0.
  MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
          WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.

  update USR02 CLIENT SPECIFIED set UFLAG = '0'
              where  mandt = lv_mandt and
              bname = lv_user
              and UFLAG NE 0.

CALL FUNCTION 'DEQUEUE_E_TABLE'
  EXPORTING
    MODE_RSTABLE = 'E'
    TABNAME      = 'USR02'.