I created a function that is supposed to set up a milestone in Teamwork Project (from teamwork.com) but I can't make it work. I don't get any response code so I'm kinda stuck here, can anyone tell me what I've been doing wrong ?

Here is the Teamwork doc, and the milestone reference. I noticed that Teamwork expect the POST request to be made with HTTPS, but the postURL doc from Zoho doesn't say anything about that, can it be an issue ?

Thanks in advance

Oh and here is the code :

1. createTeamworkTask (string Quote_ID,  string Auth,  string Project_ID ) {
3.   quoteID=input.Quote_ID.toLong();
4.   //Get the data to be send
5.   quoteData = zoho.crm.getRecordById("Quotes",quoteID);
6.   quoteTitle=quoteData.get("Subject");
7.   quoteText=quoteData.get("Description");
8.   quoteDate=(quoteData.get("Valid Till")).toString();
9.   deadline=quoteDate.replaceAll("-","");
10.   //Prepare the data with mandatory fields filled up
11.   teamworkData=map();
12.   teamworkData.put("title",quoteTitle);
13.   teamworkData.put("description",ifnull(quoteText,""));
14.   teamworkData.put("responsible-party-ids","118535");
15.   teamworkData.put("deadline",deadline);
16.   teamworkDataLayer="[" + teamworkData + "]";
17.   //Set the prepared data in valid JSON and format it the way Teamwork expect it to be
18.   data=map();
19.   data.put("milestone",teamworkDataLayer);
20.   dataJSONString=data.toString().replaceAll("]\"","]");
21.   dataJSONString=dataJSONString.replaceAll("\"\[","\[");
22.   dataValidJSON=dataJSONString.replaceAll("\\\"","\"");
23.   //Set header info, auth key is provided by a CRM variable
24.   headerData=map();
25.   headerData.put("Authorization",input.Auth);
26.   headerData.put("Content-type","application/json");
27.   header="[" + headerData + "]";
28.   //The URL is composed with the project ID, provided by a CRM variable
29.   url="https://urgh.teamwork.com/projects/" + input.Project_ID + "/milestones.json";
30.   teamwork = postUrl(url,dataValidJSON,header,false);
31.   info teamwork;
32.   //Check if data has been send successfully and display a message according to situation
33.   code=teamwork.get("responseCode");
34.   response=teamwork.get("responseText");
35.   if(code  !=  "200")
36.   {
37. message=((((("Une erreur est survenue, contactez un administrateur.") + "\n") + "Erreur ") + code) + " : ") + response;
38.   }
39.   else
40.   {
41. message="Jalon créé dans Teamwork";
42.   }
43.   return message;
44. }