sub recur_cost_permonth {
my($self, $cust_pkg) = @_;
return 0 unless $self->freq =~ /^\d+$/ && $self->freq > 0;
- sprintf('%.2f', $self->recur_cost / $self->freq );
+ sprintf('%.2f', ($self->recur_cost || 0) / $self->freq );
}
=item cust_bill_pkg_recur CUST_PKG
sub setup_margin {
my $self = shift;
- $self->unit_setup(@_) - $self->setup_cost;
+ $self->unit_setup(@_) - ($self->setup_cost || 0);
}
=item recur_margin_permonth