project_id, serialnumber, price_factor_id, price_factor, marge_price_factor)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT factor FROM price_factors WHERE id = ?), ?)|;
@values = ($invoice_id, conv_i($form->{id}), conv_i($form->{"id_$i"}),
project_id, serialnumber, price_factor_id, price_factor, marge_price_factor)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, (SELECT factor FROM price_factors WHERE id = ?), ?)|;
@values = ($invoice_id, conv_i($form->{id}), conv_i($form->{"id_$i"}),