I think what you are trying to do is not possible for the attribute you are trying to do it with...
Wildcards and Regular expressions are not valid for a handful exact identifiers or paths. So in HTML mode you can only use an exact equals match for the ID and HTML Path fields. For SAP mode you can only use exact equals match for the two attribute fields that are available for that interface. The reason is because where an ID or Path is used it is an fast exact route to find the element rather than a search through the application model.