JavaFX 2.x: plotting two different types of charts on the same chart

Question

I have a financial data chart that I use as a candlestick chart: I would like to add other series as LineChart (s).

example from javafx example - samples - Adv candlestick chart , shows that LineChart is added as average, as the last column in the data array.

I wonder if there are other ways to add LineCharts, since I need to add another LineChart line to the already drawn chart of the candlestick.

thanks