what functions to use?

[porkcushion]

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

[Ubzen]

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

[Simon Gniadkowski]

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 ?

[Keith Watford]

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"?