New Post: Why reply to other user is not working?

        var tweet1 = Tweetinvi.Tweet.PublishTweet(DateTime.Now.ToString() + "post");
        var tweet2 = Tweetinvi.Tweet.CreateTweet(DateTime.Now.ToString() + "reply");
        tweet2.PublishInReplyTo(tweet1); // WORKING

        var userTimelineTweets = Timeline.GetUserTimeline("ABC");

        foreach (var item in userTimelineTweets)
        {
            var tweet3 = Tweetinvi.Tweet.CreateTweet(DateTime.Now.ToString() + "reply");
            tweet3.PublishInReplyTo(item); // DOES NOT WORK, CREATING NEW Thread
            break;
        }