In this example, we can see the previous low of the ticker is around 105.5, the previous high is around 120.
We can set up our entries and exits by referring to the last lows and highs.
Users can adjust the searching bar range by themselves.
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.