Answering my own question. I was probably sleeping when I wrote my last post. Flash builder is looking for the service method from my ORM CFC. These are not the same as the generated accessors methods that accounts to the properties. FB4 are looking for the basically the CRUD methods for the entity.
These can be generated from the database by right clicking on the RDS tables.
Anyways, next is to test if relationships on the entity plays as nicely after the enitity get's loaded to FB4.