Hiding a column in an ALV Grid

Hi ,
I want to hide a column in an ALV grid and I am doing it as such.However it doesn't work.
data : gw_fieldcat type lvc_s_fcat,
          gt_fieldcat type lvc_t_fcat.
perform build_grid1 changing gt_fieldcat.
form build_grid1 changing p_gt_ss.
gw_fieldcat-fieldname   = 'UKURS'.
gw_fieldcat-scrtext_m   = 'Exchange rate'.
gw_fieldcat-no_out      = 'X'.
gw_fieldcat-col_pos     = 9.
APPEND gw_fieldcat TO gt_fieldcat.
endform.
Kindly suggest.

Hi,
As per code it looks good..check in the debugging corresponding to the field 'UKURS is no_out has value X in the fieldcatalog.

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