Indicator formula as found on the internet, just in case someone interested in, description below :
“Volatility channels (or bands) move with the stock, quickly adjusting to price movements. When a security trends outside the volatility channel, it adds strength to a high probability long trade . Look out for a stock to “trend” outside these bands to catch the momentum. When the swing increases, the bands respond by opening up.”
//parameter :
// Vc = 10
Up = Highest[Vc]((((High+Low+Close)/3)*2)-High)
Lo = Lowest[Vc]((((High+Low+Close)/3)*2)-Low)
RETURN Up as "upper channel", Lo as "lower channel"