ZOho Recruit API hiring Pipeline

I was wondering if it's possible to update the hiring pipeline using the API.

I am messing around and I can change the status of the applications and it shows the application as rejected but the pipeline stay's at the stage that applicant was at.

Also the adding comments doesnt work but it does with the API to update candidates.

This is the code/json I am using to update the application

// Create an empty map
data1 = Map();
// Create a list to hold candidate data
applicationDataList = list();
// Create a map for candidate data
applicationData = Map();
// Populate candidate data
applicationData.put("Application_Status","Rejected");
applicationData.put("comments","Rejeté car il ne réside pas au Canada");
applicationData.put("Hiring_Pipeline","Rejected");
// Add candidate data map to the list
applicationDataList.add(applicationData);
// Add the list of candidate data to the main map
data1.put("data",applicationDataList);
// Print the resulting map
info data1;
updateapplication = invokeurl
[
url :"https://recruit.zohocloud.ca/recruit/v2/Applications/" + candidaturesID
type :PUT
parameters:data1.toString()
connection:"zrecruit"
];
info updateapplication;

This is the the one I am using to update the candidate. In this one a notes is created but not with the application.

// Create an empty map
data = Map();
// Create a list to hold candidate data
candidateDataList = list();
// Create a map for candidate data
candidateData = Map();
// Populate candidate data
candidateData.put("ids",list(responses.get("data").getJSON("$Candidate_Id")));
candidateData.put("Candidate_Status","Rejected");
candidateData.put("comments","Rejeté car il ne réside pas au Canada");
// Add candidate data map to the list
candidateDataList.add(candidateData);
// Add the list of candidate data to the main map
data.put("data",candidateDataList);
// Print the resulting map
info data;
updatecandidate = invokeurl
[
url :"https://recruit.zohocloud.ca/recruit/v2/Candidates/status"
type :PUT
parameters:data.toString()
connection:"zrecruit"
];

So if any one know a quick trick to update the hiring pipeline and make the notes stick or if you can point me in the right direction as the API page is prety barebone.