Forms :: Populating Non Database Item Via LOV After Query

I have the scenario where I have a table(table 1) which stores the car code and the meaning of that code. I then have another table (table 2)which just stores the code. My datablock is based on the table which just contains the code(table 2). On my form if the user wishes to populate this field in the record I have a Lov which goes to the table 1 and retrieves the code and the meaning of it.

The code is then returned to the corresponding field in the datablock for table 2. this works fine in adding and editing. the user sees the meaning and whilst selecting from the lov populates the code field behind the scenes and everything works fine. However, my problem is when the user does a query only the code field is populated from table 2 (the code field is hidden to the user) therefore the meaning field is left blank as if there is no data there when in fact this is not the case.