RSI Fast and sensitive signal V1.1

This is a very simple indicator
BUY= signal > D OR signal > D2
SELL= signal < D OR signal < D2

Notes de version:

//@version=2
////////////////////////////////////////////////////////////
study(title="RSI Fast and sensitive signal V1.1", shorttitle="RSI Fast signal V1.1")

hline(70, color=red, linestyle=line, title = "Upper")
hline(30, color=green, linestyle=line, title = "Lower")
nRes = rsi(roc(close,20),20)
Res = nRes +3
plot(Res, color=blue, title="signal", linewidth = 3)

fnRes = 110-nRes

// Bollinger Bands



m = input(1.0, minval=0.001, maxval=50)
basis = sma(nRes, 20)
dev = m * stdev(nRes, 20)
upper = basis + dev
lower = basis - dev

fbasis = sma(fnRes, 20)
fdev = m * stdev(fnRes, 20)
fupper = fbasis + fdev
flower = fbasis - fdev

plot(upper, color=red, title="D", linewidth = 3)
plot(fupper, color=black, title="D2", linewidth = 3)