bloomberg EMSX feedback information

I am trying to using MATLAB to connect the Bloomberg EMSX server to place orders and Desktop connection V3 API to get realtime market data. I do get these API related files and bloomberg in my laptop, and I can also create some simple order as the order could be checked in bloomberg EMSX once created trough MATLAB, but the question is I cannot get the sequence number as every order returns. How can I access sequence number of each order automatically as it returned only in command window? One more question, MATLAB cannot update order info in its emsxOrderBlotter neither automatically or manully by clicking 'update' button.