When dynamically created variables are emptied in the sequential process template?

I have a sequence TestStand 2014 in which I dynamically create and fill many FileGlobal variables in the installation section of my main sequence.  I have it using the TestStand API to read the data in an Excel file (the data consists mainly of thresholds, limits, etc.).  The methodology itself works flawlessy.

However, there are differences in behavior when using entry points both execution of the sequential process model.  When you use the entry point of execution 'Single Pass', he has no problem in test a DUT after another.  However, when you use the entry point for execution "Test DUT", I encounter the following error after completing of DUT1 and DUT2 testing:

An error occurred the call 'InsertSubProperty' in 'PropertyObject' of 'NI TestStand 2014 API.

The name of the element "VariableName" is not valid because it is already in use.

I interpret this error message means that the variable I am trying to dynamically create the DUT2 track is already present race of DUT1.  I have a few questions about this:

1. at what point in the sequential process template are dynamically created variables flushed, such as run a further by using 'Single Pass' starts with a clean slate?

2. is there a reminder that I can substitute such as variables to rinse after each HAD run, allowing me to dynamically create variables on each HAD, during execution using "Test UUT?

3. better yet, is there a counter of TestStand I can query to determine if I already ran DUT1 when using "Test DUT", such as DUT2 uses the variables that were created dynamically on trail of DUT1?

Or you can simply use the PropertyExists function as a precondition.

PropertyExists ("Locals.Foo")

Tags: NI Software

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