sharepoint online – "Likescount" and "CommentCount" returns null

I have a search function that connects to the properties "LikesCount" and "CommentCount" (social bar).

Example:

    let localQuery = SearchQueryBuilder.create (& # 39 ;, {TrimDuplicates: false})
ContentTypeId: $ {Constants.NewsArticleContentTypeId} * (RefinableString101 <> GTSet | # $ {Constants.TargetAudienceTermSetId} OR GP0 | # $ {targetAudienceQueyry}) `)
.text (request)
.sortList ({Property: FirstPublishedDate, Direction: SortDirection.Descending})
.selectProperties ('Title', 'intraSubheadOWSTEXT', 'FirstPublishedDate', 'LikesCount', 'CommentCount', & # 39; 39; NewsTags', 'DefaultEncodingURL', 'PictureThumbnailURL', 'intraContainsVideoOWOWSBOOL'
.rowLimit (4);

But it returns null, even if the articles have "likes" and "comments".
It should recover from this social bar that can be found on the pages of the site:

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In my schema, I have these mapped properties:
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