showing custom strategies in charting area

Hello,
I've created a custom strategy and indicator following the help files. However, when I try to display it (the value should be around .1) it only shows the bitcoin price on the y axis and doesn't seem to draw anything. The number seems to be passing to the chart because if I hold the mouse over the connection, it shows the value. I have this in the code so it seems like it should work.

[DiagramExternal]
public event Action<IIndicatorValue> NewMirocanaIndicator;

var indicatorReturn = _NewMI.Process(candle);
NewMirocanaIndicator?.Invoke(indicatorReturn);

What do I need to do to show this correctly?