did you do a System: Reload after copy/pasting the code?
Try to also reload/refresh the page after you do "System: Reload" (F5 or Ctrl-R)
what SB version are you on? stable or edge?
which edhge version?
I'm on: SilverBullet 2.4.1-3ddfab51e828a1b105264cb7f51101b461419d4f-2026-02-13T19-05-36Z, and it's working
maybe try this: Queries and slash commands stopped working - #2 by Mike