Binding to dropdown to page parameter not working

As the title says, for some reason, when I bind a dropdown value prop to the appropriate input parameters on a view, it isn't displaying registering those changes on my view. I feel as if I've done this before, but I can't figure it out this time. Based on the docs, it should work how I have it set up - it describes the exact scenario I'm doing.

Page parameters:
image

View parameters:
image

It shows in the designer when I refresh the binding:

Do I need to refresh the bindings on the dropdowns on view startup? I know lineId and stationId are coming through because if I add them to a label on the view, they'll show up as they should.

I bounced ideas off of my friend and he mentioned that the page parameters are strings while the value properties in the dropdowns are integers. I used the expression toInt({view.params.stationId}) to convert it to an integer and it worked.

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