Create View Filter to filter View Types

Hello all, I am trying to create multiple View Filter that identify Call-Outs, Sections and Elevations by whether they have certain “key-words” in their View Type name. I thought it would be a straight forward script as I created View Filters via Dynamo before, but this one doesn’t work for me.

Maybe someone can help/explain?
My guess is that it has something to-do with the Parameter input at the FilterRule.ByRuleType node, but why exactly and how can I fix this or workaround it?

Much appreciated.