Formula with the properties of Sheet Metal Total Cutting Length

Subject discussed several times but no solution found...
I'm trying to retrieve a property in my 3D file that adds up the 2 cutting properties of a sheet metal body.

$PRPWLD:"Outer cutting length" + $PRPWLD:"Inner loop cutting length"

How to recover these properties to make a "custom" one?
Equation? Note? Other?

=> Something possible by the columns of a BOM table (but cell cannot be retrieved afterwards...):
https://www.lynkoa.com/forum/solidworks/r%C3%A9cup%C3%A9rer-un-propri%C3%A9t%C3%A9-de-tolerie-pour-mettre-dans-une-%C3%A9quation
http://help.solidworks.com/2017/French/SolidWorks/sldworks/c_Equations_in_Tables_and_BOMs.htm?verRedirect=1

=> Another track with the "perimeter" property of the face, but that we can't get back:
https://www.lynkoa.com/forum/mises-en-plan/cr%C3%A9er-une-n%C3%B4te-avec-la-propri%C3%A9t%C3%A9-du-p%C3%A9rim%C3%A8tre

Thank you

Indeed, why not go through an equation?

Hello

I tried to find but the only solution I found is the one you mentioned with the nomenclature and via the equations it's not possible. We would have to look at a macro...

By equations, which property should be called?
Ac corba, how to retrieve the value of the BOM cell after?
 

Hello

A ac cobra 427, yes on the macro side there is surely the possibility of doing things.

To Warner, tell me your need, not too much time at the moment but I'll try to look into it in the coming days if no other solution is found by then.

Kind regards

[Edit] small downside though, the calculated custom property will probably not update itself in case of a change to the part, in which case you will have to restart the macro.

Thank you for this feedback

Indeed, you can do everything with macros...
But here, we're just talking about a bill. I wanted to know if another possibility existed easily.
The table cell does it well

I looked everywhere and the only solution that works is the one I did with the nomenclature table. I tried with a note and put the two properties in it but no way to make them add up....

And this cell, have you found a way to recover its value?

I haven't found a solution to recover this value yet but I'm still in 2016 maybe new features available on the next version...