Help with FILTER: "multiple columns" error

[PaulDBrown]

Hello everyone. This is my very first request, and I confess I am very new to Power BI so please bear with me...

Ok, SO I'm trying to do apply  basic filter to a table, but I'm failing dismally.

Basically I would like the measure to filter the table to display only the columns which meet the expression, but I get an erro message.

here is the screenshot:

Wht exactly is wrong with the measure??

Thank you for your help!

Paul.