Hello Timothy, hello Óscar, I would like to thank both of you for giving me some new insights to AMQ. I think I got a good clue on how to go on.
@Oscar: Yeah, your sample is around to the thing I want to do. Thanks very much. I can now better understand the mutexes used with AMQ. And what kind of mutexes I must use. Thanks again! Best regards, amqBeginner