Thank you abdala.
It is only the knowledge that I gain by testing all these and there is no other benefit to me.
The software you suggested, V4.24, seems to be better than the one I had (at least I can see the same screen as your pictures show).
From your project I did find out the correct address format, which was %DW or %MX or ..., and a page in the manual also reflected those W/X/L and other designations.
Currently, I am still not successful in getting the AHMI to connect to the XG simulator.
No Response from PLC is continuous error regardless of how I set the IP addresses in both the driver and XG software.
This all requires more time and research.
If I am to be successful in the future then I will post it up here.