Is it possible to add another instrument without plotting it? For example I want to allow an indicator to be able to access the data from the 2nd instrument. I only want to see the indicator derived from the 2nd instrument and not the instruments price. Currently if you go to add an instrument and change the input dataseries you can only access the primary dataseries thats on the chart. It would be great to be able to just be able to specify a different instrument in the input series properties of the indicator.
The reason for this requirement is that often plotting the 2nd instrument screws up the scaling when using range bars etc.
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