How to set the parent of a issue using groovy script in post function

[SWAPNIL SRIVASTAV]

I am creating an issue automatically using script post function in  a transition. How to I set the parent issue for it. Like we have issue.getParentObject() to get the parent id, is there any method to set the parent id?

[Nic Brough -Adaptavist- · Accepted solution]

You have not told us exactly how you are creating the sub-task, or why, but assuming you are creating a subtask on the issue that the post-function is running against, the minimal calls you need are

newSubTask.setSummary("A summary")    
newSubTask.setParentObject(issue)    
newSubTask.setProjectObject(issue.getProjectObject())    
newSubTask.setIssueTypeId(subTaskTypeId)

You'll need to provide the  subTaskTypeId in there, I can't guess what type you might need.