I got a $150 goodwill voucher from UA recently because of a problem I experienced. Anyway, I want to book a one-way ticket from LAX to CMH using the voucher, however, I found that the fare would actually be cheaper by $100 if I book using multi-city (LAX-ORD, ORD-CMH) instead of one-way. Nonetheless, .bomb would not allow me to use the voucher if I book under multicity. Is there anyway for me to get around this?