For an script i need to change the horizontal and vertical mullions to an certain mullion type but when i want to change it, only the horizontal mullions are changed and not the vertical mullions. The instant Typename can not be changed because it is an Builtin parameter. Is there an way around to solve this problem? Dynamo uses the first name it sees so is there another note i can use or package?
Never played with mullions and dynamo together.
can you upload sample rvt file and script?