How can I represent a complex object as a command object?

[Dave Alvarado]

Hi, I'm using Spring 3.1.1.RELEASE. I was curious if it's possible to use Spring's command object feature to represent a complex object on my form. My object is

public class Organization {
   String name;
   State state;
   Organization parent;
   ...

The "name" field is straightforward to represent

<form:form method="POST" commandName="organizationr">
...
<form:input path="name" />

but if I want the state and parent fields to be represented by list boxes (e.g. <SELECT> menus), how would I do that using my command object "organization"?

- Dave