How to add new sheet metal cutlist property to part template

[Atlascycle]

I am trying to add a custom property to the sheet metal templates that my company uses to help to get the sheet metal Gauge number to populate in the cut list table and a custom note that I put in the sheet metal part drawings.
I am currently using the method in this Post: https://www.javelin-tech.com/blog/2018/ ... tal-gauge/
I then have to add a custom property to the cut list property to reference the result of this equation.

Thank you in advance for your Help.

Jason