- my $servicenum = $self->option('has_service');
- grep { $servicenum == $_->svcpart }
- map { $_->cust_pkg->cust_svc }
- $cust_bill->cust_bill_pkg ;
+ my $servicenum = $self->option('has_service') || {};
+
+ grep $servicenum->{ $_->svcpart },
+ map $_->cust_svc,
+ $cust_bill->cust_pkg;