I have a property I call Data_Inches and another one I call Data_Centimeters.
One has value 1" and the other 1cm .
I have two other properties:
InchesPlusCentimeters = Data_Inches + Data_Centimeters
CentimetersPlusInches = Data_Centimeters + Data_Inches
The first one evaluates to 5.08cm
The second one evaluates to 3.54cm
So the order of operands to the addition operator changes the value. In Sketchup formulas, addition is not commutative.
Are these rules documented anywhere?