1    I configure Slave  a channel to be bi-direction receive  channel; when the ANT receive a broadcast message from the Master, and notify host,can host send Acknowledged message in reverse direction??
        2   when Slave ANT receive a broadcast message, notify host  ChannelEventFunc (0x4E) ,and  host  send a Broadcast message in reverse direction ,the Master have received the message succsesfully ,however  the slave host don't reveive a EVENT_TX(0x03) message.   How can I  grab  this message ?
       3  As AP2 don't support the Configure Event Filter ,so what measure can I take to filter the  ChannelEventFunc (0x4E) message,because  when I use Acknowledged message for communication , this is not helpfull ,and  this appers so frequently that I often miss the usefull message I want.