$form->{"qty_$i"} = $form->format_amount(\%myconfig, $form->{"qty_$i"});
$linetotal = $form->format_amount(\%myconfig, $linetotal, 2);
$line_purchase_price = $form->format_amount(\%myconfig, $line_purchase_price, 2);
$form->{"qty_$i"} = $form->format_amount(\%myconfig, $form->{"qty_$i"});
$linetotal = $form->format_amount(\%myconfig, $linetotal, 2);
$line_purchase_price = $form->format_amount(\%myconfig, $line_purchase_price, 2);