I'm having trouble changing my "Assign to" Tasks to Flexi Tasks. The main problem consists to add fields to the content type of the Workflow Tasks list. With "Assign to" Task there is no problem because you can edit on the same form the content type. With the "Flexi Task" I've tried to add a new content type on site level which inherits from Nintex Workflow Multi Outcome Task but the new field doesn't show up in the task.
Is there a way beside Infopath or Nintex forms to add a field to a flexi task?