It is possible for a 'facebook application' to post a COMMENT on a POST when there is a valid ACCESS_TOKEN. API call for the same is: /xyz_profile_id/comments/?access_token=...
ACCESS_TOKEN being generated by allowing the "facebook application" to get access to xyz_profile_id. The post done will have default FROM ID as xyz_profile_id showing his/her profile photo along with the comment.
My requirement is this: How to change the FROM ID as appilcation_id so that the profile photo of the application is shown beside the posted comment.