I do not know exactly from whom it is quoted. (It may be author HighProfit.)
Long position when 8 is over 20 and 63 ,
it opens a short position for the vice versa.
Alarms have been added.
%0.1 comission added.
Note : =
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.