Combining results of previous steps into numerical test

I'm relatively new to TestStand. Here is what I am trying to do.
Call VI A with numerical limits, make measurement, store value in sequence local.
Call VI B without numerical limits, make measurement, store value in sequence local.
Calculate: measurement A - measurement B. Compare the result to numerical limits.
Do I need to create a very simple VI with just two inputs, a subtraction function, and an output as a LabVIEW numerical limit step to implement step 3, or is there a more recommended way to do it?
Thanks.
Stephen
Solved!
Go to Solution.

Here's what I would do:
Call VI A as an action step. Store the measurement in a local variable
Call VI B as an action step. Store the measurement in a local variable
Use the None Adapter to create a Numeric Limit Step. Set the Data Source to Locals.AValue - Locals.BValue
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~

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I use this feature all the time and it works for me. The only real
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[Attachment DebugExtraResults.seq, see below]
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Thank you.
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