I'm trying to implement a custom search filter on a website I'm working on. I'm using a custom smart search with a custom search index and it works great, but I cannot seem to filter out extra fields (like Price, for example). I'd like to be able to tie some of my custom fields to the filter, but I cannot figure out how to do so, even after looking through the documentation on the filter.
If further explanation is needed, please don't hesitate to ask. I do not have much Kentico experience.