Send a reply to a tweet sends a tweet

Question

I'm trying to send a reply to a tweet by giving the tweet_id, but instead of sending a reply, it sends a tweet. I feel like the tweet_id isn't user in the function.

Here's the code I have:

function(properties, context) {
    var Twitter = require('twitter');

    var client = new Twitter({
      consumer_key: context.keys["ConsumerKey"],
      consumer_secret: context.keys["ConsumerSecret"],
      access_token_key: context.keys["AccessTokenKey"],
      access_token_secret: context.keys["AccessTokenSecret"]
    });

    let result = context.async(async callback => {
      // Reply to the tweet
      client.post(
        'statuses/update',
        {
          status: properties.message,
          in_reply_to_status_id: properties.tweet_id
        },
        function(error, tweet, response) {
          if (error) {
            callback(error[0].code + ':' + error[0].message);
          } else {
            callback(null, 'OK');
          }
        }
      );
    });

    return { tweet_result: result };
}

Answer 1

This is the description of the in_reply_to_status_id parameter from the documentation for the statuses/update API:

The ID of an existing status that the update is in reply to. Note: This parameter will be ignored unless the author of the Tweet this parameter references is mentioned within the status text. Therefore, you must include @username , where username is the author of the referenced Tweet, within the update.

If properties.message doesn't "at" the person you want to reply to, it won't be sent as a reply.