Look at the options for the filter control and be sure that "Required" is not selected. I believe there will always be a value selected if this option is enabled.
Also, in general if you want to deselect something in VA, Ctrl + click the selection.
I hope that helps,
Sam
Missed SAS Innovate in Orlando?
Catch the best of SAS Innovate 2025 — anytime, anywhere. Stream powerful keynotes, real-world demos, and game-changing insights from the world’s leading data and AI minds.