QualityYesVotes parameter returns Null in forums reply REST api


I am trying to query the forum replies using REST api - https://community.telligent.com/community/10/w/api-documentation/61563/list-forum-reply-rest-endpoint. I am receiving JSON response for forum replies but few parameters (mainly TotalQualityVotesQualityScoreQualityYesVotesQualityNoVotes, etc.) are null. I tested with couple of forum replies but the results are same.

I want to get upvote and downvote count along with forum replies. Is it possible to get upvote/downvote from forum reply listing api or do I need make separate api call to get those details?

Any help will be appreciated.

Thank you.