How to include creator record ID (system generated) in a script for a workflow which creates a task in Zoho CRM and populates the task fields with the creator record values?

Hi I have an app that we will use to record customer cancellations. One of the workflows associated with this app involves creating a task in Zoho CRM for a colleague to contact the customer. The code I have used is below;

taskinfo = Map();

taskinfo.put("Owner",{"id":"3052082000000264001"});

taskinfo.put("Due_Date",today.addDay(7));

taskinfo.put("Subject","Cancellation Request");

taskinfo.put("Description","Please contact re cancellation request");

taskinfo.put("$se_module","Accounts");

taskinfo.put("What_Id",{"id":input.Organisation_Name.toLong()});

response = zoho.crm.createRecord("Tasks",taskinfo);

This works fine and a task is set up when the cancellation form is submitted. However I need to add another field to the task - the creator record ID - as I want to be able to create another workflow which will update a status field in Creator when the task is closed in the CRM. ( I am assuming I can do this easily using Zoho Flow - as long as I have the ID of the Creator record to be updated!)

Here is my amended code to create the task with the creator ID included;

taskinfo = Map();

taskinfo.put("Owner",{"id":"3052082000000264001"});

taskinfo.put("Due_Date",today.addDay(7));

taskinfo.put("Subject","Cancellation Request");

taskinfo.put("Description","Please contact re cancellation request");

taskinfo.put("$se_module","Accounts");

taskinfo.put("What_Id",{"id":input.Organisation_Name.toLong()});

taskinfo.put("CancellationID", input.ID);

response = zoho.crm.createRecord("Tasks",taskinfo);

This code does not create a task at all!!

Can anyone help me please?

Thanks

Susan