How can a container's text clear

Daer all,

i have created one container,

on double click on material i have printing Material long text in container.

but the problem is that, suppose i have 2 material, i have double click on first material then material description printed correctly,

but when i double click on second material container data(previous description of material) not removed,

so, i want to clear the container text.

here i m pasted code:

CREATE OBJECT G_EDITOR_CONTAINERSET

EXPORTING

CONTAINER_NAME = 'RISKED'

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

lifetime_dynpro_dynpro_link = 5.

IF sy-subrc NE 0.

• add your handling

ENDIF.

IF sy-subrc NE 0.

• add your handling

ENDIF.

L_WORDRAP_POSITION = L_WORDRAP_POSITION - 1.

CREATE OBJECT G_EDITORSET

EXPORTING

PARENT = G_EDITOR_CONTAINERSET

WORDWRAP_MODE = CL_GUI_TEXTEDIT=>WORDWRAP_AT_FIXED_POSITION

WORDWRAP_POSITION = 60 "LINE_LENGTH "L_WORDRAP_POSITION

WORDWRAP_TO_LINEBREAK_MODE = CL_GUI_TEXTEDIT=>TRUE

EXCEPTIONS

OTHERS = 1.

IF sy-subrc NE 0.

• add your handling

ENDIF.

CALL METHOD G_editorSET->set_toolbar_mode

EXPORTING

toolbar_mode = 0

.

CALL METHOD G_editorSET->set_statusbar_mode

EXPORTING

statusbar_mode = 0.

• CALL METHOD g_editorSET->SET_TEXT_AS_R3TABLE

• EXPORTING

• TABLE = I_SETL "g_mytable

• EXCEPTIONS

• ERROR_DP = 1

• ERROR_DP_CREATE = 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.