Jira cloud have subtasks inherit their priory

[Sarah Jones]

I have a post function on my create subtasks so when the subtask is created it inherits its Priority from the parent. 

I am using "copy value from other field" yet it doesn't seem to work when I create a subtask.  Have I missed something?

Is it because the workflow for task and subtask are the same? should they be separate?

Thanks

[Crystelle S]

Can't be sure, but is the issue with the fact that you are trying to update before the issue(s) formally "create"? example of a workflow that is copying fix version from parent issue to subtask:

[Sarah Jones]

No doesn't look like it, the issue is created first. then the priority field is set from the parent.