Hi Bogdan,
In the field catalog , try to add value 'X' to edit of field catalog , and try to make all other fields as ' ' in edit field of field catalg. This will make the desired field to be highlighted .
CALL METHOD catalog
EXPORTING
i_tablename = 'LT_TADIR_DISP'
i_fieldname = 'CHK'
i_text = text-009 "Check Box
i_len = c_fieldlength
i_checkbox = 'X'
i_edit = 'X'
i_hotspot = ' '.