You're not uploading data, so it's not really appropriate to use that method. You'll have to set the fields manually then (filename, content type, etc). A future update to the plugin will be able to guess the content type for you based on the file.
You're not uploading data, so it's not really appropriate to use that method. You'll have to set the fields manually then (filename, content type, etc). A future update to the plugin will be able to guess the content type for you based on the file.