what functions to use?

 
what functions would i use to count the last 10 bars from price and measure each bars volume from bar open to bar close?
 
paperbags: what functions would i use to count the last 10 bars from price and measure each bars volume from bar open to bar close?

You can try the list of functions listed upon this page.

https://docs.mql4.com/series

 
paperbags:
what functions would i use to count the last 10 bars from price and measure each bars volume from bar open to bar close?
What "volume" are you looking to use ? traded volume or tick count ?
 
paperbags:
what functions would i use to count the last 10 bars from price and measure each bars volume from bar open to bar close?

Do you mean "volume" or "range"?