How to "normalize" vertical scale of charts via script?

[zentrader]

Hi,

I am going to trade several pairs.
I need to set up all charts to look visually similar.
So I need to adjust vertical scale of each chart to
get charts visually similar. I mean Average Bar on
each chart should have similar height in pixels on the screen.

How to do it via script? (Empty4)

I tried to google it but no success yet.

Thank you for your commentary.