Anybody have insights on this? The example I attached to the other post is a really simple example, but this is happening all over my models and it's causing a lot of headaches for us. This is a new method that I'm trying so I'm sure there are tricks to this that I'm missing. I am trying to create assemblies that can be updated by changing a few overall dimensions in a basic "interior dimensions" model and having other parts dimensions update automatically using equations. My problem is that the link is breaking down between the parts and then when I want to modify dimensions I'm unable to update them without recreating them. Very frustrating. Not sure why the breakdown is occurring in the first place, but I can't even see the equations in the dimensions in question. They just say the dimension is read-only and won't let me see the equations.