Thanks jcl for the hint. Payoff script is one of the most advanced sample script comes with Zorro as it involves installation and the use of R, plus the complicated Options strategies! I managed to get it run and by clicking the strike price slider I can see the changing shape of the payoff chart. This is really marvelous!

But this isn't a good script to demo the simple use of realtime charting. Could you post a simple charting script to show the realtime charting of EURUSD by connecting any live broker such as MT4? I would love to make this myself but I just couldn't know where to start - consider I am not a total Zorro beginner. If I cannot make it I would imaging many others won't be able to make it either. So your help would be really appreciated!