Indicator that uses multiple symbols

[light65536]

I am trying to create an indicator that uses multiple symbols that were added to chart already.

I have attempted to use

Plot0.Set(Closes[1][0]);

To access the extra series that are already on my chart. But, this doesn't work. Must I add the series in the initalize step?

I tried that too

Add("Symbol Name", PeriodType.Minute, 5);

But this doesn't work. I'm still working on this and searching the forums. Any help appreciated.. new to this system still.

[light65536]

Okay I figured it out. The bar didn't exist and was throwing an exception. Now that I check the log it makes sense. This was the code required.

if(CurrentBars[0] < 1 || CurrentBars[1] < 1)
return;

Plot0.Set(Highs[1][0]);

[sledge]

http://www.ninjatrader.com/support/forum/showthread.php?t=47720&highlight=BrokenMultiSeries

Okay I figured it out. The bar didn't exist and was throwing an exception. Now that I check the log it makes sense. This was the code required.

if(CurrentBars[0] < 1 || CurrentBars[1] < 1)
return;

Plot0.Set(Highs[1][0]);