Hi!
I am looking to filter on a custom attribute in a canvas audience paths, but I want to do a contains statement.
I am trying to reference multiple attributes with out having to list each specific value as the trigger. The attribute naming convention works were I could use contains.
Thinking I can use a targeting filter where custom attribute matches regex. However, are there any special characters that need to be added to/around "signup" in the attribute value?

Thanks!