Grey out the single cell in table control

Hi,

I want to grey out the particular cell in 3rd row 'ITAB-SINE' (2nd column)column in the table control.

I've tried like this.But its not working.

loop at itab with control TC cursor tc-current_line.
module gray_out.
endloop.

module gray_out output.

DATA COLS LIKE LINE OF TC-COLS.
loop at tc-cols into cols .

if tc-current_line = '3' and
cols-screen-name = 'ITAB-SINE'.
cols-screen-input = '0'.
modify tc-cols from cols index sy-tabix.
endif.
endloop.

endmodule.

Thanks.

Bala

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Message was edited by: Vinod Kumar