is($paid_amount, -17.51, "${title}: paid amount");
is($invoice->paid, 17.51, "${title}: paid");
is($number_of_payments, 3, "${title}: 3 AR_paid bookings");
is($paid_amount, -17.51, "${title}: paid amount");
is($invoice->paid, 17.51, "${title}: paid");
is($number_of_payments, 3, "${title}: 3 AR_paid bookings");