B=18
I kept having my B length on my component in the model being shifted anytime I drug the adjusting arrow to and odd value or typed in an odd value (like 15, or 16.75) It would either over adjust or not move at all. Then I tried this...
B=18.0
All worked fine after that! You have to have the ".0" in the value to allow for non-whole numbers. This was a simple thing but I found no documentation on it and really just figured it out by trial and lots of error.
Happy Scripting!
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Acts 1:8