I'm trying to create a new field in my sheet list schedule programmatically with C# in the revit-api but I'm running into issues. I've found how to add a regular OOTB field here but it doesn't mention how to create a new field and then add that.
For example how to add a "Sheet Order" field and a "Sheet subOrder" field.
Any and all help/direction is appreciated. I've been crawling the web and the Revit API docs but haven't found anything yet about adding new fields.