SL-Candle

For MT4

I want and EA who update the SL of open orders depending of the candle body size

AVG Last candle = 6  
// calculate the average body size of the last 6 close candles of the chart 
// example (AVG Candle Body = 510 points)

SL multiplier = 4
// multiplier by 4 the average body size for having the SL
// example (SL = 2040)

Display on the Chart (right and bottom) =

AVG last candle = 6
AVG Candle body size = 510
SL Multiplier = 4
SL = 2040

Thanks