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USDX - this is US Dollar index

Code:

//study(title="EURUSD/USDX Ratio", shorttitle="Ratio", overlay=false)
//sym(s) => security(s, period, close)
//EURUSDX = (sym("EURUSD") / sym("USDX"))
//len = input(20, minval=1, title="Length")
//out = ema(EURUSD, len)
//plot(out, title="EMA", color=green)
//plot(40, color=red)
//plot(30, color=#EBC87A)
//plot(5, color=blue)
//plot(3.20, color=red)
//plot(EURUSDX, color=navy, linewidth=1)




and finally, please add alert when these 2 lines crossing.

I assumed USDOLLAR is USDX.
We have two lines, EMA of Eur / Usd
And "EUR / USD" / "USDOLLAR"

These two are simply not on the same scale.

Try my version.
1. Line is "EUR / USD" / "USDOLLAR"
2. Lime is EMA od 1. Line
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