How to - Select and Delete all Wall Types with Name Containing String

[Yna_Db]

Look for similar examples maybe…
http://dynamoprimer.com/en/04_The-Building-Blocks-of-Programs/4-4_strings.html
http://dynamobim.org/forums/topic/search-for-multiple-strings-ex-different-room-names-in-a-string-contains/

How to filter by a boolean parameter?

Hello, I am trying to filter by a boolean parameter in a list. I am trying to use it as a bool mask, but its not working. So then I tried to filter by string.contains, but its not working either. So then I tried a list.filter but still no dice. What am I doing wrong. shouldnt the bool mask take bool parameters as a mask? How the heck do I filter this list? Thanks! [image]

Common Selection Methods Using Dynamo — Kyle C Martin