Is there an augmented dicky fuller cointegration function?

can someone help me on how to capture the value of a pivot so that I may use it in a strategy? I know that the pivot function uses the value in the function and it appears its correct in the print statement, but when I plot the study on the graph the plot is way off.

I am wanting to capture the value of a pivot so I can use it in an automated strategy but so far it looks like a condition. I know that the pivot function uses the value in a variable in the function but when I write my own pivot, it seems to plot at a different price than what the print statement r...