// Calculating
fast_ma = sma_source ? sma(srcx, fast_length) : ema(srcx, fast_length)
slow_ma = sma_source ? sma(srcx, slow_length) : ema(srcx, slow_length)
macd = fast_ma - slow_ma
signal = sma_signal ? sma(macd, signal_length) : ema(macd, signal_length)
hist = macd - signal

r = 0
exit = macd - signal


x = if (since_x_under + since_y_under) >= 0
    exit
else
    r

buycolor = Comprar ? #4dff4d : na
sellcolor = Vender ? #ff3300 : na

bgcolor(sellcolor, transp = 10)
bgcolor(buycolor, transp = 10)