I am trying to add a Task record to CRM in a Creator Subform when the form action On Success is executed.

Its a simple statement  

x = zoho.crm.create("Tasks", { "Task Owner" : " someone@company.com", "Subject" : "Chase Up" }, 2);

This does not work for a subform On Add -- On Success action BUT does work on the main form On Add/On Edit -- On Success action ?

Please can you advise why ?