EMA21/55 Crossover Alert

This will alert on EMA crossovers. Alert for 21 crossover and crossunder. Work in progress.
Open-source script

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.

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Hello, thank you for this.

I'm new to tradingview. How do I use this on my chart and edit the number of days?

Thank you for your help.
gtsea gtsea
I figured it out but now I'm wondering how to apply the alert to all stocks in the universe without adding them one by one. Any ideas?
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