Link-field, is it possible to restrict files dialog to page-files?

My question is probably similar to this one: Link Field: Is it possible to query Pages

I’m trying to restrict the files shown in the dialog to the page-files, when option “file” is selected. When having a huge site-structure with many children it is hard to find the specific file.

Blueprint part:

 fields:
          ctaLinkObject:
            label: CTA
            type: object
            fields:
              link:
                type: link
                options:
                  - anchor
                  - url   
                  - file
                  - custom   
                query: page.files # didn't work                  
              linkText:
                type: text

The query didn’t work, is there a way? If not, i will add an additional files-field.

Thanks in advance.

Currently no, there is a feature suggestion that you might want to upvote as well: Link field: `query` support for pages/files · Kirby Feedback

okay, i did. Thank you!