Try this field for distance
activity.icu_distance = result;
Hmm, just tried it, and it won’t update 
@david I assume distance is not calculated during analysis, so it is not changeable with a custom field?
Try this field for distance
activity.icu_distance = result;
Hmm, just tried it, and it won’t update
@david I assume distance is not calculated during analysis, so it is not changeable with a custom field?