You can use the List view controls widget in the App store for this.
See https://appstore.home.mendix.com/link/app/105694/ for the widget and https://listviewcontrols.mxapps.io/p/multifilters for an example.
Allard, could it be that I have to insert a new widget for each one? This because I want this to be automatic.
The point is that each time I add a category it adds itself to the line of checkboxes…
But the attribute value is static as I have to put it in myself..... I might be doing something wrong, I'll keep looking!but the attribute value is static as I have to put it in myself..... I might be doing something wrong, I'll keep looking!
THE ID!!!!!!!!!!!!!!!!!!!!!!! I what I needed :p
Thanks Allard!