Automation Builder 2.4: Codesys simulator is not connecting with HMI simulator

Hello,
I am new with ABB...Can't figure why simulator PLC is not connecting CP600 simulator.

What I have done
1- Add symbol configuration
2-build and generate the XML
3-selected Codesys v3 Ethernet protocol.
4-Import tags from the XML .
5-Run the simulator..
Result...is nothing...Tried loop back ip 127.0.0.1..same...

Any advice what should I do ? Or it is not connecting with the simulator!!!!