Add Line in table control

HI,

using for insert option for table control in below coding .

WHEN'ADD'.

IF temp_okcode NE 'DISP'. "indicates display mode

READ TABLE itab2 INDEX 1.

IF sy-subrc = 0.

APPEND itab2.

ENDIF.

ENDIF.

ITab2 using data vbeln posnr charg nubag wtbag.

this fields all repeated in next line.

data all display next line .

prb is. manuval data entries enter first row is show second row data occurs.

plz,advise me.

By,

Jeevan.