Invalid arguments in DrawRegion

[sgordet]

I think the problem is that I'm using two horizontal lines instead of data series. If that is the problem, how do I correct it. If that isn't the problem, any suggestions would be appreciated:

DrawRegion("region" + j.ToString(), 20, CurrentBar, doublesList[i],doublesList[i+1],Color.Empty,Color.Lime,2);

The above line is the predicate of an "if" statement. j is an integer that increments on each repetition.

[NinjaTrader_Bertrand]

sgordet, you're correct - you could not use 2 doubles, one has to be a series :

http://www.ninjatrader.com/support/helpGuides/nt7/drawregion.htm?zoom_highlightsub=DrawRegion

[sgordet]

I have a list of doubles where each item of the list represents a horizontal line. Can you point me to where I can how to convert that list into a list of data series?
Or is there a better way to do this than using DrawRegion: I want to shade the regions bounded by horizontal lines that are less than a certain distance apart.

[NinjaTrader_Bertrand]

I think a region would be the right approach, you need to store the doubles in a custom series with the .Set method the DataSeries objects would offer.