Hello! I am trying to achieve a rule that will update the Parent Issue due date, to the latest due date of any subtask created.
Being the noob that I am, I tried the following:

I managed to Pick a date and make it be the Parent Issue due date if the subtask date changes and is later than the Parent Issue due date, however, I am having trouble making the subtask due date become the Parent Issue due date.
Any help would be greatly appreciated!