Guys I have a main form called vehicle_transportation and 4 more forms on the same app

customer_form

auction_form

destination_form

make_model

From the main vehicle _transportation Form I have look up fields to all these 4 forms and everything works perfect to capture the data and generate the records.

now i created a new form to invoice the operation, on it I added a subform with a lookup to one field on the main form (vin_number) and im able to select from the drop down the proper vin corresponding to a vehicle, setup a collection variable and put all content of the record on such, but when i access the collection to get the customer name corresponding to that vin_number under name, auction, destination, make_model fields appear to be integers when the are supposed to be strings , I've printed the values and the are the ID numbers of records, i have 3 nights trying to resolve this, putting lookups on customer form and vehicle transportation to try to make it bi directional but i'm stuck. i've followed all the related instructions  

total newbie here and loving ZC5 but please can you give me a hint on how to solve this, all help and comments will be greatly appreciated