Filter by price not working

I have created a search field “price” and would like to filter the results in descending order but it is not working. Maybe something wrong with the parameters added when clicking on the filter: “&orderby=meta_value&key=price&order=desc”

This is the entire query: ?search-class=PPT_S-ppt_s&cs-all-0=&cs-price-1=&cs-price-2=0-200000&orderby=meta_value&key=price&order=desc

Any suggestion?