Algolia relevant sort not working

Hey guys,
I have an index which has attributes like:

{
"conversion_ranking": 30344.92999,
  "categories": [
    "geometric sans",
    "display",
    "sans serif",
    "grotesque sans",
    "humanist sans"
  ],
}

In the index. i have created relevant sort by conversion_ranking(desc) and strictness 100%.
it is showing result fine. but when I fetch the data from instantsearch.js library by passing

instantsearch.widgets.configure({

        facetFilters: ["categories": "sans serif"],

        hitsPerPage: maxHits,

      })

then it is not sorting the data correctly on the basis of conversion_ranking

Any help would be much appreciated.