photos_create Requires upload file

[nishant-n]

Hello Folks,
I'm using below code to post fb's staus as a image:
@page ||= Mogli::Page.new(:id => facebook_page_id, :Client => Mogli::Client.new(facebook_page_token))

@page.photos_create(Mogli::Photo.new({:source => File.open('public/images/banner_large.png'),:name=>"Helllo this is text message"}))

And getting error of Requires upload file, also I want to use url of image, can I do this by same gem.