You can use in the xPrice any series: Open, High, Low, Close, HL2 , HLC3, OHLC4 and ect...
You can change long to short in the Input Settings
Please, use it only for learning or paper trading. Do not for real trading.
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.
USDT (TRC20): TH29EEXa19vfwZNYvxdUuMxoFY5QDYLcWG