MT3API Reconnect in pumping mode

 
There is next situation:
1. I connect to server
2. Start pumping mode
3. If I stop pumping mode I'll be able to start it againg, but only with that instance of object I used first time. So if I want to connect to other server or if I have distroyed the first instance of object I'll not be able to use pumping mode.
In your example 2 if I connect to one server then press button "disconnect" and then connect to other server I'll get error message "some error".
So, tell me please what should I do to make posibility in my program to change servers without restarting application?
 
Hey, people, tell me something...