Filter Multiple Dashboard Layers by Common Field

[AllisonTalsma]

I have a park amentities layer (polygon) and a Parks layer (points) that have a common field (GIS_Asset_ID_Parks) as there could be multiple amentities in one park.

I am trying to create a category selector to filter the parks based on amentity (splashpads, playgrounds etc.) The spatial filter won't work as the park point is not always directly on the amenities.

Is there a way to change the source field for filtering? So that I can filter the other layer based on a field?