function postResponse(channel, userName, topic, title, author, description, link) {

  var payload = {
    "channel": "#" + channel,
    "username": "New item added to reading list",
    "icon_emoji": ":grin:",
    "link_names": 1,
    "attachments":[
       {
          "fallback": "This is an update from a Slackbot integrated into your organization. Your client chose not to show the attachment.",
          "pretext": "@" + userName + " added a new item to the reading list",
          "mrkdwn_in": ["pretext"],
          "color": "#76E9CD",
          "fields":[
             {
                "title":"Topic",
                "value": topic,
                "short":false
             },
             {
                "title":"Title",
                "value": title,
                "short":false
             },
             {
                "title":"Author",
                "value": author,
                "short":false
             },
             {
                "title":"Description",
                "value": description,
                "short": false
             },
             {
                "title":"Link",
                "value": link,
                "short": false
             }
          ]
       }
    ]
  };

  var url = '[]';
  var options = {
    'method': 'post',
    'payload': JSON.stringify(payload)
  };

  return UrlFetchApp.fetch(url,options);
}