map { $form->{invtotal} += $form->{"amount_$_"} } (1 .. $form->{rowcount});
$form->{forex} = $form->check_exchangerate( \%myconfig, $form->{currency}, $form->{transdate}, 'buy');
map { $form->{invtotal} += $form->{"amount_$_"} } (1 .. $form->{rowcount});
$form->{forex} = $form->check_exchangerate( \%myconfig, $form->{currency}, $form->{transdate}, 'buy');