As the title says, how can I add a data series to the "default" Strategy Chart? 

I was trying to guess the charts instance variable without luck. 

Thanks in advance!

// Initialize()

// Create new data series object
var assetPrice = new Series("Price", SeriesType.Line, 0);

// Adding series object to chart (guessing the instance name...)

// OnData()
Plot("Strategy Equity", "Price", data.Bars["SPY"].Close;