It's possible to add Stress Score value to 3rd party synchronized activities?

Like adding a manual activity to our calendar, its possible to add (Xert) Stress Score, Focus and specificity, to a activity that have been synchronized from Strava or Garmin Connect?
I’ve always calculated my heart rate Stress Score, and have developed a correlation factor with the Training Sterss Score from Peaksware, to monitoring my MTB rides. I’ve observed that the TSS is correlated with the XSS quite well, so can we add the value to this activities?

The best way to do this is to create a manual “mirror” activity with the XSS values rather than change the ones for an uploaded activity.

That’s what I’ve been doing so far.
But I was looking for a quick and easy way to do it. Thanks anyway! :slight_smile: