Searching using multi selection checkbox

Hi everyone.
Please help me.
Now I am building Real estate app.
But i am going to search with amenity.


This is Repeating group for multi checkbox.

As you can see, I set the custom state to hold selected amenities.

And i set the checkbox

now after select checkboxs, that is, after selecting several amenities, if i click search button, and then i am going to search properties with selected amenities.

So i added select button workflow like this image.


But I can not search.

Since i have to process too many data, so I don’t want to use :filter operation when searching.

But currently, Searching is not working.
Please help me!!!