Feed publish doesn't support picture

[bvsatyaram]

client.selection.me.feed.publish!() is publishing everything but the picture. Every param of the following call is published except for the picture: fbclient.selection.me.feed.publish!( :message => "This is message"), :name => "title of the feed", :caption => "Caption of the feed", :description => "Description of the feed" :link => "", :picture => '', :actions => "{'name': 'Volunteer', 'link': ''}" )

[nsanta]

Picture is supported on fbgraph. I'm currently using feed.publish! with picture as parameter.:picture accepts only a url as a value, not a File.