About object returned by a java callout

Hi all,
I'm doing a java callout to a method like this
public static ResultVO send(final String ...)
where ResultVO is a simple value object that includes two fields:
private int msgId;
private String timestamp;
In ALSB I'm trying to trace simply the contents of the object using a log action with $resultVO statement.
Here what I see on ALSB log file:
... REQUEST] DEBUG: <ctx:java-content ref="jcid:-7643e517:119b82c761f:-7fd0" xmlns:ctx="http://www.bea.com/wli/sb/context"/>>
I tried also with string($resultVO) but in that case I don't see anything.
Does a java callout has to return only primitive types or only void or what are the restrictions on java callout returned values ?
Thanks
ferp

Hi,
I've already tried with your suggested option 1):
public class ResultVO implements Serializable { ...
the static method invoked by ALSB in the java callout action:
public static ResultVO send(
final String ...,
final String ...,
final String ...,
final XmlObject msg)
throws FailureException { ...
and in ALSB I've assigned the returned value to the result variable.
When I log the result variable I see only:
... DEBUG messag : <con:java-content ref="jcid:102f2086:119b93e49d2:-7fd0" xmlns:con="http://www.bea.com/wli/sb/context"/>>
and not the string form of the value that the object represents.
How can I access to VO members, say for e.g. result.getTimestamp() ?
Thanks
ferp

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About object returned by a java callout

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