Strategy with custom indicator

[none1]

I'm trying to make strategy with custom indicator in NT 6.5 (I have cs and dll files in Custom directory).
This indicator draws graph perfectly, but it's hard to build strategy with it.
Indicator has Values[] datasets with double type values.
Sometime dataset values is undefined and then these values equals to Close[0]!
Not zero, not -1, not null. Why?
How I can check that indicator.Values[0][0] is undefined?
I think expression Values[0][0] == Close[0] is not very good solution.

[NinjaTrader_RyanM1]

Hello none1,

Welcome to the NinjaTrader forums!

You can use ContainsValue() to make sure there is a valid value for the plot. This sample can help with this:
Ensuring indicator plots are valid before programmatically accessing them