my @hidden_variables = map { "l_${_}" } @columns;
push @hidden_variables, qw(warehouse_id bin_id partnumber partstypes_id description chargenumber bestbefore qty_op qty qty_unit partunit l_warehousedescription l_bindescription);
push @hidden_variables, qw(include_empty_bins subtotal include_invalid_warehouses date);
my @hidden_variables = map { "l_${_}" } @columns;
push @hidden_variables, qw(warehouse_id bin_id partnumber partstypes_id description chargenumber bestbefore qty_op qty qty_unit partunit l_warehousedescription l_bindescription);
push @hidden_variables, qw(include_empty_bins subtotal include_invalid_warehouses date);