//@version=5
indicator("EMA Crossover", overlay=true)

// Define the EMA lengths for short and long EMAs
short_lenght=input.int(12,title = "short_lenght")
long_lenght=input.int(21,title = "long_lenght")
// Calculate short and long EMAs
short_ema=ta.ema(close,short_lenght)
long_ema=ta.ema(close,long_lenght)

// Plot the short and long EMAs
plot(short_ema,title = "short_ema",color=color.red)
plot(long_ema,title="long_ema",color=color.green)
// Create crossover conditions
crossover=ta.crossover(short_ema,long_ema)
crossunder=ta.crossunder(short_ema,long_ema)
// Plot buy and sell signals
plotshape(crossunder,title = "SellSignal",color = color.red,location = location.abovebar,style=shape.triangledown,size = size.small)
plotshape(crossover,title = "BuySignal",color=color.aqua,location = location.belowbar,style=shape.triangleup,size=size.small)