I’m programmatically creating a shared parameter via the Revit API. I am specifying a GUID and doing this as part of an add-in I am maintaining. I have recently revamped the parameter code, and that’s where my troubles began, although a lot of the parameter code that sets up things like bindings has not changed.

The bindings in general are to a list that consists of “find all the Categories in document.Settings.Categories where the Category Type is not Invalid and the Category Allows Bound Parameters”

The add-in manipulates these parameters in other functionalities.

When I go to find a parameter that I have “just added” to the document, I can only find it by GUID. I cannot find it by name.

The parameter has no value (which makes sense, as I’ve literally just added it) and Is read-only, which makes no sense.

It is possible that I have removed this parameter before in the course of my testing. The GUID I am using for each of the 10 parameters is unique but a constant specified in my code.

What gives?