My Helios boss script is absolutely different. I can't check
case "beginning":
_bossInstance = addSpawn(HELIOS1, HELIOS_SPAWN_LOC.getX(), HELIOS_SPAWN_LOC.getY(), HELIOS_SPAWN_LOC.getZ(), HELIOS_SPAWN_LOC.getHeading(), false, 0, false);
and when kill HELIOS1
_bossInstance.deleteMe(); <--- not work
_bossZone.getPlayersInside().forEach(player -> playMovie(player, Movie.SC_HELIOS_TRANS_A));