Update step limit name at run-time

I need to run through some test steps in a TestStand sequence multiple times. This wouldn't be a loop on a single step or group of steps but probably a goto a label "for" loop in TestStand. BTW, TestStand 2.0.1 calling code from a LabWindows/CVI DLL via the standard prototype adapter. Each iteration I need to have the test step limit names be updated with a different suffix. So step1 might have results0 and results1 and on the 2nd run results0 would be renamed to results0b. How do I update the limit names, at run-time, from a LabWindows/CVI function? I.e. the first test in the sequence's Main would update the steps below it to update the suffix. I started down the path of using TS_SeqContextGetProperty to get the sequence handle
TS_SeqContextGetProperty( testData->seqContextCVI, &errorInfo, TS_SeqContextSequence, CAVT_OBJHANDLE, &seq_hndl );
then using TS_SequenceGetNumSteps( seq_hndl, &errorInfo, TS_StepGroup_Main, &num_steps ) to determine the number of steps in the Main tab.
Enter a for loop:
TS_PropertyGetValString( testData->seqContextCVI, &errorInfo, buf, TS_PropOption_NoOptions, ( char ** )&rslt_name ) with buf as "Sequence.Main[0].Result.Measurement[0]" errors out with an invalid name message. The idea is to get this value, update it based on the iteration in TestStand ( this is already acquired and working ), and then set the value back. Then, move on to the next step and so forth.
Any suggestions?
Thanks.
-G-
Solved!
Go to Solution.

So, I tried the example and it works but only for a single step. I've tried two options: 1. having a single step that programmatically changes all the result names in all the other steps in the sequence. 2. having each step update the result names itself. For thought 1 the loop would run and the changes would occur but when the function was exited I'd get an exception from TestStand. No real information in the details as it looked like a memory corruption error. I then examined the details of what occurred and tried more experiments. If I had the loop have more than 1 iteration this behavior occurred. If I comment out the set function it still occurs. Then, for thought 2, it works like a champ on all the steps until I loop back to the top of the sequence. Then, on the first step ( 2nd time through ) it bombs out.
Attached is the code for the 2nd possible solution.
Does anyone know what the problem is or if there's a way to do this?
-G-
Attachments:
Change Step Name.txt ‏7 KB

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