I am trying to have my not(type parameter) switch with multi parameters. Anybody able to help me out on this? I ve spent an hour trying different formula expressions with no luck.

i am using this as a reference.

http://revitfamilies.blogspot.com/20...-formulae.html

I have attached the family i am working on.

i am using this as a reference.

http://revitfamilies.blogspot.com/20...-formulae.html

I have attached the family i am working on.

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