I'm just starting mess around with Design Checker to try and catch errors we see all the time. What I want to know is how do I build a Custom Check? I want to be able see if a Custom Property in a model or assembly has been filled in, can I do that? I can't set it to be equal to something because it can be different every time, like Deception. I'm also looking at making sure sketches are fully constrained and the hole sizes are standard, that kind of thing. So I want to check things that are user dependant.

Thanks in advance for the help...