This event occurs on the application footer display, it is frequently used when it is required to display any calculated data on grids or report footer. Ex: sc_lookup(ret," select sum({item_value}) from orders_items where id_order='{fld_id_order}' "); {fld_footer_total_field_a} = {ret[0][0]} * 0,1; The field {fld_footer_total_field_a} must be created on fields menu