3IC

//version=5
indicator("3IC", overlay=true)

// 3 Inside Candle logic
inside_2 = high[1] < high[2] and low[1] > low[2]
inside_3 = high < high[1] and low > low[1]

three_inside = inside_2 and inside_3

plotshape(three_inside, title="3 Inside Candles", style=shape.triangleup, location=location.belowbar, color=color.yellow, size=size.small)