PMJI

>I don't know what is the difference between 2 programs... second part seems to be used to save the remote file... but how can they related to each other?

They are two different methods

>DO getdatafromurl WITH 'http://hk.finance.yahoo.com/d/quotes.csv?s=0179.HK&f=sl1d1t1c1ohgv&e=.csv'

>But there is nothing happened, except there is "blinking" the screen, it is downloaded something, but not into any file I can locate!

You need the return value:

lcText = getdatafromurl("http://hk.finance.yahoo.com/d/quotes.csv?
s=0179.HK&f=sl1d1t1c1ohgv&e=.csv")