R.E.Signal V3.1

study("R.E.Signal V3.1", overlay=true)
rangeup = close[1]+tr[1]
rangedown = close[1]-tr[1]
over() => high > rangeup and close > open
under() => low < rangedown and close < open
plotshape(over(), style=shape.triangleup, location=location.belowbar, color=green)
plotshape(under(), style=shape.triangledown, location=location.abovebar, color=red)