can you explain more ! , what do you mean by replacing , is it completing the old task ? , the new task doesn't belong to any process , do you want to get the task form data of the old one and save it to the new one ?
Assume that user2 UserTask have initially one formProperty.
The number of form properties i need is dynamic and related to a given input.So, im trying to create new usertask (name: user3) and add as much form properties as i want .Finally i replace user2 with user3 .