[errai-users] Serialization issue, cannot serialize type:

Hi guys, I'm trying to send an array of objects from server to client: StockPrice[] prices = getPrices(symbols); MessageBuilder.createMessage() .toSubject("BroadcastReceiver") .signalling().with("data", prices) .noErrorHandling() .sendNowWith(bus); (1) where StockPrice is: public class StockPrice implements Serializable{ private String symbol; private double price; private double change; ... but when executing (1) I get the following error: [ERROR]Exception in thread "Timer-2" java.lang.RuntimeException: cannot serialize type: com.ifitec.gwt.client.StockPrice [ERROR] at org.jboss.errai.bus.server.io.JSONEncoder._encode(JSONEncoder.java:59) [ERROR] at org.jboss.errai.bus.server.io.JSONEncoder.encodeArray(JSONEncoder.java:147) [ERROR] at org.jboss.errai.bus.server.io.JSONEncoder._encode(JSONEncoder.java:55) [ERROR] at org.jboss.errai.bus.server.io.JSONEncoder.encode(JSONEncoder.java:38) [ERROR] at org.jboss.errai.bus.server.io.JSONMessageServer._addObjectPart(JSONMessageServer.java:13) [ERROR] at org.jboss.errai.bus.client.api.base.JSONMessage.set(JSONMessage.java:191) [ERROR] at org.jboss.errai.bus.client.api.builder.AbstractMessageBuilder$2.with(AbstractMessageBuilder.java:60) So looking at JSONEncoder I discovered the serializableTypes variable which is used to check if objects are serializable: else if (serializableTypes.contains(v.getClass()) || tHandlers.containsKey(v.getClass())) { return encodeObject(v); So now Im looking for how to put in serializableTypes the StockPrice class that I have created. Please let me know if Im correct that I have to fill serializableTypes or maybe Im totally wrong. And if any can let me know how to fill it would be great. thanks Alejandro (amontenegro)