Having problems mapping Java to ActionScript objects

Question

I am building a service that returns  a custom object tree to AS3 client over RPC call. Consider a couple of java classes, the TestObject  contains a list of TestInnerObject classes:
public class TestObject
    public int id = 123;
    public String title = "Test object title";
    public List <String> stringList = new ArrayList<String>();
    public List <TestInnerObject> objectList = new ArrayList<TestInnerObject>();
    public TestObject()
        stringList.add("First string in the list");
        stringList.add("Second string in the list");
        objectList.add(new TestInnerObject(456));
        objectList.add(new TestInnerObject(789));
public class TestInnerObject
    public int id = 0;
    public String title = "Test inner object title";
    public List <String> stringList = new ArrayList<String>();
    public TestInnerObject(int id)
        this.id = id;
To work with them on the client a have a couple of the counterpart AS3 classes:
[Bindable]
[RemoteClass(alias="test.TestObject")]
public class TestObject
     public var id:int;
     public var title:String;
     public var stringList:ArrayCollection;
     public var objectList:ArrayCollection;
     public function TestObject()
[Bindable]
[RemoteClass(alias="test.TestInnerObject")]
public class TestInnerObject
     public var id:int;
     public var title:String;
     public var stringList:ArrayCollection;
     public function TestInnerObject()
My understanding is that such a setup should return result deserialized into objects of TestObject.as and TestInnerObject.as types but I am getting plain AS3 objects that have all the fields but I can not cast them to the required types. This is hardly the optimal way to work with response.
Could somone clarify what should be fixed?
Thanks

Answer 1

Adrian,
Thanks for the feedback. I added Serializable interface to java classes and confirmed that the package is correct. I am still having the same problem though. Here is the result handler code. May be I am doing something wrong here? When I access result objects as Objects I can get the fields and transfer them to the proper classes (commented lines) but it's hardly efficient. As soon as I try to cast the result I am getting an error.
private function onResult(result:AcknowledgeMessage):void
           //result.body contains the actual data
            trace("RPC Ok");
            trace(result.body);
            trace(result.body.id);
            trace(result.body.title);
            trace("");
            var testObject:TestObject = result.body as TestObject;
            //var testObject:TestObject = new TestObject();
            //testObject.id = result.body.id;
            //testObject.title = result.body.title;
            //testObject.stringList = result.body.stringList;
            //testObject.objectList = result.body.objectList;
            trace(testObject);
            trace("TestObject id: " + testObject.id);
            trace("TestObject title: " + testObject.title);
            trace("TestObject stringList: " + testObject.stringList);
            for each (var inner:TestInnerObject in testObject.objectList)
                trace("Inner id: " + inner.id + " Inner tittle: " + inner.title);