onHear variables not being set

Summary

The onHear trigger is supposed to set two variable

Placeholder	Source	Description
<skill.var.volume>	~onHear trigger	Returns a float value between 1 and 15 representing the intensity of the sound. Directly proportional to the distance (the further away the source, the higher this value)
<skill.var.sound-type>	~onHear trigger	Returns the type of the sound

But that does not work anymore in the latest dev build on a 1.21.3 paper server, as they return UNDEFINED

BillyTheConfused:
  Type: SKELETON
  Hearing:
    Enabled: true
  Skills:
  - message{m="SOUND <caster.uuid> <skill.var.volume> <skill.var.sound-type>"} @World ~onHear