public async Task<FBResult> publishCustomStory( FBTestUser user, FBObject customObject ) { PropertySet parameters = new PropertySet(); string path = user.Id + "/logincs:verb"; parameters.Add("noun", customObject.Id); parameters.Add("access_token", user.AccessToken); FBSingleValue sval = new FBSingleValue(path, parameters, new FBJsonClassFactory(FBObject.FromJson)); return await sval.PostAsync(); }