My script/@version=5
indicator("20 SMA Cross 200 SMA", overlay=true)
sma20 = ta.sma(close, 20)
sma200 = ta.sma(close, 200)
plot(sma20, color=color.blue)
plot(sma200, color=color.red)
longSignal = ta.crossover(sma20, sma200)
plotshape(longSignal, title="20/200 Cross", location=location.belowbar, color=color.green, style=shape.labelup)