How upload files with caption

Discord Q&A strapi-questions
1

tried this but not working

     formData.append(
        `files.imagemP`,
        images[0],
        `${article.slug}-principal.jpeg`,
      );
      formData.append(
        `fileInfo.imagemP`,
        JSON.stringify([{ caption: 'captionTest' }]),
      );

seen this post a while later doing exactly the same thing but there was no solution at the end

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