Can you link a Custom Property to a formula? I'm looking to streamline cut list creation for our machine shop.

I am able to link the length of an extrusion to a custom property. An example is a cylinder that is 1-15/16" in diameter and 20" long. I can then put this property (CutLength) in a BOM so that the material and cut length will be in the BOM.

What I want to do is add 1/4" to the length of the extrusion (CutLength+0.25) IF my custom property "Machine" is selected that indicates that the part is machined. This takes the guesswork out of remembering that an item is machined so it needs to be cut longer in order to be cleaned up on each end.