Hi i wanna use and test some things with the rob hoffman method, but i get an error and dont know exactly the right code.

I want a arrow being plotted when the signal comes. but there i get an error at these lines
if bulltrend
drawcandle(open, high, low, close, color.green)
else
if beartrend
drawcandle(open, high, low, close, color.red)

// Define inputs


c = 2.8 // factor used to calibrate the shape of the hammer candle used as a signal

gradient = 1 // slope of moving averages

// Calculate moving averages
average1 = average[5](close)
average2 = average[20](close)
average3 = average[50](close)
average4 = average[100](close)

// Define trend conditions
bulltrend1 = average1 - average1[2] > gradient and average1 < close
bulltrend2 = average1 - average2[2] > gradient and average2 < close
bulltrend3 = average3 - average3[2] > gradient and average3 < close
bulltrend4 = average4 - average4[2] > gradient and average4 < close
bulltrend = bulltrend1 and bulltrend2 and bulltrend3 and bulltrend4

beartrend1 = average1 - average1[2] < -gradient and close < average1
beartrend2 = average1 - average2[2] < -gradient and close < average2
beartrend3 = average3 - average3[2] < -gradient and close < average3
beartrend4 = average4 - average4[2] < -gradient and close < average4
beartrend = beartrend1 and beartrend2 and beartrend3 and beartrend4

// Plot candles based on trend
if bulltrend
    drawcandle(open, high, low, close, color.green)
else
    if beartrend
        drawcandle(open, high, low, close, color.red)

// Plot hammer candles
hammerup = abs(open - close) < (high - low) / 2 and close > high - (high - low) / c and open > high - (high - low) / c
hammerdown = abs(open - close) < (high - low) / 2 and close < low + (high - low) / c and open < low + (high - low) / c

plotshape(series=hammerup, title="Hammer Up", color=color.green, style=shape.triangleup, location=location.belowbar)
plotshape(series=hammerdown, title="Hammer Down", color=color.red, style=shape.triangledown, location=location.abovebar)