im using human npc to set up some boss fights at monuments. after going threw the list of setting him up including his waypoints the npc teleports out of the cave and is now ontop of the mountain. how do i lock him to being down in the cave where i set his spawn posistion to be?

"userid": 606665672,
"displayName": "Ghor",
"invulnerability": false,
"health": 1000.0,
"respawn": true,
"respawnSeconds": 600.0,
"spawnInfo": {
"position": "823.9782 -102.1026 164.1953",
"rotation": "0.1050518 0.1148999 -0.01222037 0.9877312"

he apears in the proper X and Z location but his Y posistion is wrong