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Hi, Michael,

Thank you so much for the test sample! I will research on that.

Great with the definition. That is something I want confirmation for a long time.

PostMutiplyByA.PostMutiplyBy(B) => A*B

PreMultiplyBy: A.PreMultiplyBy(B) => B*A

 

Thumb up!

 

Thanks
Limin
Inventor pro 2023 64 bit update 2.1; Windows 10 pro 64 bit version 21H2; Office 2013 32 bit