So, there is probably an easy answer to this, but I haven't found it...
I have a loop that checks the stderr output of the end task of the loop. If there is something in the stderr output, it loops. Otherwise, it exits the loop.
It looks to me like the value is checked before the task is run, and that value is from the prior execution of the job. If so, I need a way to clear that value upon job start.
Can someone please clue me in?

It is not possible to clear it through Task or similar right now. But I am a little confused about what you are experiencing because output should be cleared when Task start so at end of loop all previous Tasks should have been cleared. Maybe you are performing the check when the Task itself is running. You may want to check that after or similar.

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