Big 3 Indicator TradingView

//@version=3
study("Big 3",overlay=true)

// enter on Arrows
// take profit on touch with 80 SMA, gray, or at discretion

fast = sma(close,20)
mid = sma(close,40)
slow = sma(close,80)

plot(fast,linewidth=1)
plot(mid,linewidth=2)
plot(slow,linewidth=4)

isUptrend = close > fast and close > mid and close > slow
isDowntrend = close < fast and close < mid and close < slow

confirmed = (low > fast and low > mid and low > slow) or (high < fast and high < mid and high < slow)

barcolor(isUptrend ? green : isDowntrend ? red : gray)
plotshape(not confirmed[1] and confirmed and isUptrend ? close : na,style=shape.arrowup,location=location.belowbar,color=green)
plotshape(not confirmed[1] and confirmed and isDowntrend ? close : na,style=shape.arrowdown,location=location.abovebar,color=red)