stomp rollback

stomp guru,

I use stomp to connect ActiveMQ. I am curious whether stomp provide backout.

all enqueue and dequeue functions calls that have occurred since the last syncpoint are to be backed out. Messages put as part of a unit of work are deleted; messages retrieved as part of a unit of work are reinstated on the queue.

I call stomp "abort",  sleep seconds, then call receive. But i can not receive the backout messages unless I restart stomp connection.

Thanks