Hello,

I want to calculate the BollingerBand from a computed Indicator. For example:

Identity1 = new Identity("AAPL");
Identity2 = new Identity("SPY");
IIndicator spread = Identity1.Minus(Identity2.Times(HedgeRatio));

BollingerBand = BB(symbol,...);

The `BB` function only accept symbol, but I want a BB from spread. How can I achieve this?

Thx