Changing Function Module SM02_GET_UNREAD_MESSAGE 

Procedure

...

       1.      Start transaction SE37.

       2.      Enter SM02_GET_UNREAD_MESSAGE in the Function module field and choose Change.

       3.      Enter the following lines after the IF ENTRY_TYPE = CALL_FROM_DYNP query:

SELECT SINGLE * FROM TEMSGU WHERE BNAME = SY-UNAME
IF SY-SUBRC = 0.
  IF TEMSGU-BDATE = SY-DATUM.
    LAST_USR_EMSG = TEMSGU-BID.
  ENDIF.
ENDIF.

CALL 'C_SAPGPARAM' ID 'NAME'  FIELD 'rdisp/myname'  
  ID 'VALUE' FIELD MYNAME.

       4.      Choose Save and then Activate.