There is an option to apply a custom property to Item Variables. How does this work? or How do I use it?

Hi David, using the Item Variable, makes it a lot easer to use the variable repeatably. It sets inside your other variables for easy use in a formula.
It can also be set as an item, or product which allows the value to be set in a list or in a easy to find window.
So is you set it the product to use "rebar diameter", like below it will automatically set the value in your calculations... fun fun stuff

What am I doing wrong here?
I have the custom proterty computed based on Rebar #. I believe the ternary operator is supposed to return the value based on the Rebar # Input. But the value is being returned as zero. Any thoughts?

I think I figured it out, I had to make it apply to Items as well so it can be accessed.

Hi David, email me if you need any help on this, but it sounds like you already conquered!