How to tag a user within a message via API

How to tag a user within a message via API

How can we tag a user within an automated message when posting to a channel from within the CRM via custom function

Scenario
We have accounts who get put on credit hold when they don't pay. When we do this it triggers a custom function to post a message to a channel. I'm trying to tag the account owner within the message so it's directed specifically to them. 

I'm unable to find it within the API documentation. 

My Code Snippet is below...


  2. //Invoke the user connector function and assign the the map "mp"
  3. resp = zoho.crm.invokeConnector("crm.getusers",mp);
  4. respMap = resp.get("response").toMap();

  6. users = respMap.get("users");
  7. userList = users.toJSONList();
  8. ownerList = List();
  9. userMap = Map();

  11. for each  user in userList
  12. {
  13. eachUser = user.toMap();
  14. if(eachUser.containValue(ownerName))
  15. {
  16. ownerList.add(eachUser.get("email"));
  17. userMap.put("email",eachUser.get("email"));
  18. userMap.put("channelName",eachUser.get("Sales_Channel_API"));
  19. ownerEmail = eachUser.get("email");
  20. }
  21. }
  22. info userMap;
  23. repMessage = "@" + ownerName + " any update on this Account payment? \n\n";
  24. repChannel = userMap.get("channelName");
  25. //View Account Url
  26. url = "https://crm.zoho.com/crm/orgXXXXX/tab/Accounts/" + id;

  28. title = "Credit Hold Notice For";
  29. subj = accName;
  30. body = repMessage + "This account (& any child accounts) are on credit hold. \n\nNo orders will be shipped for this account.";

  32. payload = {"text":subj,"bot":{"name":"Accounts Dept"},"card":{"title":title,"theme":"modern-inline"},"buttons":{{"label":"View Account","action":{"type":"open.url","data":{"web":url}},"type":"+"}},"slides":{{"type":"text","title":"----------","data":body}}};
  33. resp = zoho.cliq.postToChannelAsAdmin(repChannel,payload,"zcliq2");

Thanks in advance