In C# how do you create a class called "Spread" that will have OHLC like the other bars the strategy will access. I am using Multicharts.net. Any help would be much appreciated!
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You could use the `DataManager` to load and access data from non-charted symbols. Such an indicator could then calculate the spread between the CL's and plot these with a paint bar (four plots, one for the high, low, open, close, and low).
You could also use the `CustomInstrument`class if I understand you correctly, though that is a new beta version and I'm not yet on that beta. There's an example of that class here.