I'm trying to create a simple 8x2 extrusion that will represent a band on a building elevation. The length varies by instance but needs to be reportable in a schedule (preferably using the "Length" shared parameter name. I've never used reporting parameters before but have made an attempt at it in the attached file. The parameter of Length displays the stretched length in the properties box but won't appear in a schedule. The Instance Length parameter will appear in a schedule but doesn't always show the correct value. There must be some basic concept for this that I'm not grasping.
One note is that this family was adapted from one already created by someone else and the Length labe cannot be deleted. It's as if the file this it's a template.