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.
As there no index mentioned in your indicator setting. Can you add Nifty 50 index into your indicator settings? So that Indian Traders Community can use this indicator.
If you add Nifty 50 Index into Indicator, please drop me a notification on Trading View.