# Source URL: https://dev.epicgames.com/documentation/en-us/fortnite/create-your-own-npc-medic-in-unreal-editor-for-fortnite
# Local doc: epic-docs/documentation/en-us/fortnite/create-your-own-npc-medic-in-unreal-editor-for-fortnite.md
# Section: Tracking when Characters are in the Heal Volume
OnBegin<override>()<suspends>:void=
Print("Hello, AI!")
VFXSpawner.Disable()
HealVolume.AgentEntersEvent.Subscribe(OnAgentEnters)
HealVolume.AgentExitsEvent.Subscribe(OnAgentExits)
Verse Library
verse
21 Tracking When Characters Are In The Heal Volume
Initializes NPC medic behavior, handles healing volume triggers, and manages VFX state.
extracted-snippets/documentation/en-us/fortnite/create-your-own-npc-medic-in-unreal-editor-for-fortnite/21-tracking-when-characters-are-in-the-heal-volume.verse