yuthavithi volatility based force trade scalper strategy

//@version=2
strategy("yuthavithi volatility based force trade scalper strategy", overlay=true)

fast = input(3, minval= 1, title="Fast")
slow = input(20, minval = 1, title = "Slow")
atrFast = input(20, minval = 1, title = "ATR Fast")
atrSlow = input(50, minval = 1, title = "ATR Slow")

len = input(20, minval=1, title="Length")
multiplier = input(2, minval=1, title="multiplier")
src = input(close, title="Source")
bbMid = sma(src, len)
plot(bbMid, color=blue)

atrFastVal = atr(atrFast)
atrSlowVal = atr(atrSlow)
stdOut = stdev(close, len)
bbUpper = bbMid + stdOut * multiplier
bbLower = bbMid - stdOut * multiplier
plot(bbUpper, color = (atrFastVal > atrSlowVal ? red : silver))
plot(bbLower, color = (atrFastVal > atrSlowVal ? red : silver))


force = volume * (close -  nz(close[1]))
xforce = cum(force)
xforceFast = ema(xforce, fast)
xforceSlow = ema(xforce, slow)

bearish = ((xforceFast < xforceSlow) and (atrFastVal > atrSlowVal)) and ((xforceFast[1] > xforceSlow[1]) or (atrFastVal[1] < atrSlowVal[1])) and (close < open)
bullish = ((xforceFast > xforceSlow) and (atrFastVal > atrSlowVal)) and ((xforceFast[1] < xforceSlow[1]) or (atrFastVal[1] < atrSlowVal[1])) and (close > open)


if (bullish)
    strategy.entry("Buy", strategy.long)

if (bearish)
    strategy.entry("Sell", strategy.short)