Hi @kom,
Okay, I've got something for you. Here's what it can look like:

It might say "Local Data Filter," but that's actually a Global Data Filter in that dashboard, and as such, will update row states (selections) when it's modified so that your selection formula operates. How did I do this? One tiny change in the script that JMP generates. But first, I built the dashboard as that video showed:

Next, I ran that dashboard to make your almost-there version with a local data filter:

Next, I saved the script of this dashboard to a script window, by using the Red Triangle for the dashboard:

On line 47, you will see the filter being defined:

Change Local to Global, and you're done!

I've attached your table here with the full script saved to the table. *Almost* no coding required
@julian