Fenix 5X: Editing reps / weights in the Strength Training App from the watch

I'm trying to do this from the watch so that I can adjust the proper weights needed while in the gym, and as I progress in my program. But I am not sure how to do this. Support ... could not provide support on this either. But it should be possible since workouts can be created from the watch as well. And I'm sure that there is a way to edit if a mistake was made in creating the workout.