Hi Ravindra,
You can use this method...in ever particular interval...
IFCONTROL_NAMEISNOTINITIAL.
***for clearing of object and methods using cl &*******
CALLMETHODTEXTEDIT-Name->free
* EXCEPTIONS
* cntl_error = 1
* cntl_system_error = 2
* others = 3
.
FREE edit_nec.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
and again initiate the object in PBO of 1001 screen.
Many Thanks / Himanshu Gupta