I'm using rfacebook gem to interact with facebook connect. And I'm having a problem with uploading images. As facebook api says, the data should be transferred in a hash like json object. So I'm making an hash

      publish_values = {
        :uid => @post.profile.channel_uid,
        :message => @post.content,
        :auto_publish => true,
      }


      unless @post.message.skip_link_info
        publish_values[:attachment] = {}
        publish_values[:attachment][:name] =  @post.message.link_title unless @post.message.link_title.blank?
        publish_values[:attachment][:caption] = @post.message.link_title unless @post.message.link_title.blank?
        publish_values[:attachment][:description] = @post.message.link_description unless @post.message.link_description.blank?
        unless @post.message.no_thumbnail || @post.message.link_image_url.blank?
          publish_values[:attachment][:media] = [{ :type => 'image', :src => @post.message.link_image_url, :href => @post.short_uri }]
        end
      end

But It's not uploading any image to the facebook, the xml respons says "properties must be a dictionary". So I'm stuck in here for a couple days It doesn't make any sene