Problem with ALV using classes

Dear all,

I am facing a strange problem with ALV grid.

I am using the method set_table_for_first_display of class cl_gui_alv_grid.

For Layout I am using FM 'LVC_FIELDCATALOG_MERGE'.

In the output all the fields are displayed in blue colour. I am not modifying the field catalogue.

One more strange thing I observed is if I dont pass variant to the method set_table_for_first_display, the output is fine (all the columns are in white colour).

Now I want all the fields in white colour when i pass variant.

CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
      i_structure_name       = 'ZC9_TWS_DEV_OUTPUT'
      i_bypassing_buffer     = 'X'
    CHANGING
      ct_fieldcat            = gs_fieldcat
    EXCEPTIONS
      inconsistent_interface = 0
      program_error          = 0
      OTHERS                 = 0.

CALL METHOD go_grid_1->set_table_for_first_display
    EXPORTING
      is_layout       = gs_layout
      is_variant      = gv_variant
      i_save          = 'A'
      i_default       = 'X'
    CHANGING
      it_fieldcatalog = gs_fieldcat
      it_outtab       = gt_output.

Could you please help me

Thanks in advance

Edited by: Aravind Kanaparthi on May 6, 2011 11:58 AM