qos.addClientProperty("threeKey", new Integer(55));
MsgUnit msg = new MsgUnit(key, "message".getBytes(), qos);
senderConnection.publish(msg);
// subscribe
senderConnection.subscribe(new SubscribeKey(this.glob, "clientProp"), new SubscribeQos(this.glob));
waitOnUpdate(10000);
senderConnection.erase(new EraseKey(this.glob, "clientProperty"), new EraseQos(this.glob));
senderConnection.disconnect(new DisconnectQos(this.glob));