[Opening point of the position]
Envelopes
     Enter long at the Down Band
     Smoothing method  -  Simple
     Base price  -  Close
     MA period  -  55
     Deviation %  -  1.2
     Use previous bar value  -  Yes

I don't know how to set 20% of the Donchian Channel. I think this future is not presented.

A same direction signal - Does nothing
An opposite direction signal - Does nothing

[Opening point of the position]
Donchian Channel
     Enter long at the Down Band
     Base price  -  High & Low
     Period  -  1
     Shift  -  55
     Use previous bar value  -  Yes

[Closing point of the position]
Donchian Channel
     Exit long at the Up Band
     Base price  -  High & Low
     Period  -  1
     Shift  -  55
     Use previous bar value  -  Yes

Regards

Vivek
India

Here FSB opens a long position at the 55 days Low and Closes it at the 55 days High.
The short logic is the same:  Open short at High55 and close it at Low55.

The result is a reversible system.

   
A same direction signal - Does nothing
An opposite direction signal - Does nothing

[Opening point of the position]
Donchian Channel
     Enter long at the Down Band
     Base price  -  High & Low
     Period  -  55
     Shift  -  0
     Use previous bar value  -  Yes

[Closing point of the position]
Donchian Channel
     Exit long at the Up Band
     Base price  -  High & Low
     Period  -  55
     Shift  -  0
     Use previous bar value  -  Yes

Is it possible for me to introduct new variables like 55 day high/low?

Regards

Vivek

India