Santiago Montoya gave a good example of changing data from a workflow rule but it does not seem to work properly Changing Data from a Workflow Rule or Scheduled Report | AppSheet Help Center
The issue is that Workflow > Run these tasks > Task category > Change Data
does not save the ‘Data change action name’
Consequently, the workflow rule that I am creating does not run. I have checked this by adding a second task so that the first task is Change Data and the second task is Send email. While the workflow gets to the second task and sends email, the first change data task does not work. Again, I have run the behaviour task as a stand alone item inline within the app and it works as intended, so I no the behaviour works nicely to change data in a row.
Any reason why the Task category > Change data is not saving the task?