I have problem with following code, and would appreciate help:

```
//@version=4
study(title="Example", shorttitle="Ex", overlay=true)

//Average volume, 45 periods
sum = volume[1]
for i = 1 to 45
    sum := sum + volume[i]
volumeMA = sum / 45
VolumeRatio = volume/volumeMA

//Calculate Scores - Volume
VolumeScore = 0
if VolumeRatio > 1 and VolumeRatio < 1.5 
    VolumeScore := 1
if VolumeRatio >= 1.5 and VolumeRatio < 2 
    VolumeScore := 2
if VolumeRatio >= 2 
    VolumeScore := 3

//Calculate Scores - HH
HH_Bull = 0
if high >= highest(high, 5)
    HH_Bull := 1    
if high >= highest(high, 8)
    HH_Bull := 2    
if high >= highest(high, 14)
    HH_Bull := 3

HH_Bear = 0
if low >= lowest(low, 3)
    HH_Bear := 1    
if low >= lowest(low, 6)
    HH_Bear := 2    
if low >= lowest(low, 10)
    HH_Bear := 3

//Caclulate Total Score
Candle_Bull_Score = VolumeScore + HH_Bull
Candle_Bear_Score = VolumeScore + HH_Bear

BullCandle = close > close[1] and open-low >= 10
BearCandle = close < close[1] and high-open >= 10

plotshape(BullCandle, title= "Bull", location=location.belowbar, color=color.green, transp=0, style=shape.triangleup, text="BUY-" & Candle_Bull_Score)
plotshape(BearCandle, title= "Bear", location=location.belowbar, color=color.red, transp=0, style=shape.triangledown, text="SELL-" & Candle_Bear_Score)

```

Please note that I have deliberately combined `text="Buy" & Candle_Bull_Score`, aware that it won't work just to explain what I'm trying to do.
I want to plot the "BullCandle" variable but give the indication of the signal strength by using Candle\_Bull\_Score and Candle\_Bear\_Score.