Great it did work !!
much appreciate the advise.
I think, I started using Mango M2M (the great Scada product) around 2010. My gratitude goes to the developers.
When I installed Mango on Windows it did work like a charm, but every time I tried installing on Ubuntu gave me a headache. finally I did manged to install on a Ubuntu server (I don't want to allocate more resources just for running a server)
The reason I want to install Mango on Ubuntu desktop version is the Gambas3 is another opensource SDK.
when I did some google research I found that ScadaBR which is a derivative from Mango M2M, but easy to install, and I can install it on Ubuntu desktop.
What soever I still love Mango M2M. much appreciate that if you can direct me to sort out the Mango Ubuntu installtion issue. I know this Forum is not for discussing installation issues.
Anyway thank you once again for helping me
Have a great day !!