RSIcon limiti 45 50 trading sistem

//Created by Magnesio
study(title="CM_RSI_EMA", shorttitle="CM_RSI_EMA_", overlay=false)
src = close, 
len = input(14, minval=1, title="RSI Length")

up = rma(max(change(src), 0), len)
down = rma(-min(change(src), 0), len)
rsi = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))


plot(rsi, title="RSI", style=line, linewidth=1, color=fuchsia)

band1 = hline(79, title="Upper Line", linestyle=dashed, linewidth=1, color=gray)
band0 = hline(21, title="Lower Line", linestyle=dashed, linewidth=1, color=gray)
band2 = hline(50, title="Upper Line", linestyle=solid, linewidth=1, color=green)
band3 = hline(45, title="Lower Line", linestyle=solid, linewidth=1, color=green)
fill(band1, band0, color=purple, transp=90)