Tether Line (Request)

https://www.multicharts.com/support/...s-tether-line/
Anyone can code this for me?
It is very simple.
Highest versus Lowest of chosen Length divided by 2.

I'm not a coder you see.

here you go

Thanks a lot mate! You're the best

hi there can you plz send me mq4 file , i need that one file as i want to make ea and my developer cnt make the ea from ex4 file

Here I made it myself as a way to learn how to code in MQL4
This is my first ever time programming in MQL so it might not be perfect but it works.