Using ww:select to set non-trivial properties

I've searched around the forum and haven't seen a good answer to this question, so here it goes.

Here's my setup.  I have two classes, one existing as the property of the other: 

public class Person {
     private String name;
     private Car favoriteCar;

     ....getters/setters/etc
}

public class Car {
    private int id;
    private String make;
    private String model;
    private int year;

    ...getters/setters/etc
}

When creating a new Person, I would like to be able to select from a drop-down of available Cars to assign to the Person's favoriteCar property.  I already know how to get the list of available Cars to the ww:select tag in the jsp page, but after that I'm lost.

I get errors that indicate the action is trying to set the property to the key of the selected Car, but I want it to set the actual Car object.  Is there any way to do this without resorting to a custom type converter?

Thanks in advance.

Matt[i][/i][i][/i][i][/i][i][/i][i][/i]
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