sub _calc_credit {
my $self = shift;
- $self->option('amount');
+ my $warnref = $_[2]; #other input not used by credit_flat
+ my $warning = $self->option('amount') ? '' : 'Amount set to zero ';
+ $$warnref .= $warning if ref($warnref);
+ return $self->option('amount');
}
1;