I have created a custom BOM that has a column for length directly linked to my boss/base extrude. My value for my custom property attribute is "D1@Boss-Extrude1". What I'm finding out is that SWX has different ways of labeling extrude's. On the icon for the Extrude you see Boss/Base. How does it know which is which? Does anyone have a better way of linking the length of structural steel to BOM or can I link multiple commands to the custom tab?