EMA 9 vs EMA 150 Cross Indicator

//version=5
indicator("EMA 9 vs EMA 150 Cross Indicator", overlay=true)

// Input EMAs
shortEmaLen = input.int(9, title="Short EMA (Fast)")
longEmaLen = input.int(150, title="Long EMA (Slow)")

// Calculate EMAs
emaShort = ta.ema(close, shortEmaLen)
emaLong = ta.ema(close, longEmaLen)

// Detect Crosses
bullishCross = ta.crossover(emaShort, emaLong)
bearishCross = ta.crossunder(emaShort, emaLong)

// Plot EMAs
plot(emaShort, title="EMA 9", color=color.gray)
emaColor = emaShort > emaLong ? color.green : color.red
plot(emaLong, title="EMA 150", color=emaColor, linewidth=2)

// Plot Arrows
plotshape(bullishCross, title="Buy Signal", location=location.belowbar, color=color.green, style=shape.arrowup, size=size.small)
plotshape(bearishCross, title="Sell Signal", location=location.abovebar, color=color.red, style=shape.arrowdown, size=size.small)