Can't select which Plot Value to use in Strategy Builder

[ttodua]

I have two plots in custom indicator, but I can't choose which one to be used in strategy builder. There is no "Value plot":



what should be the reason?

[ttodua]

Solved. Seems I was missing this:


[Browsable(false)]
[XmlIgnore]
public Series<double> Xyz
{
get { return Values[1]; }
}