Answered
I'm trying to use the Record to SpreadSheet tool to record the length of the shadow (m) in the attached file. It was working, and now it doesn't and I'm not sure why. I can record the time t, but not the length of the shadow m.
Any thoughts?
Thanks.
Gabriela
The same question 
It looks like a problem tracing segments. If you make a new number:
mm=m
then you can trace mm instead
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