error?

minetest.register_entity("better_minetest_test:testentity",
	{
		hp_max = 100,
		physical = true,
		weight = 5,
		collisionbox = {-0.35,0.0,-0.35, 0.35,1.8,0.35},
		visual = "mesh",
		visual_size = {x=1, y=1},
		mesh = "better_minetest_creeper.obj",
		textures = {"better_minetest_creeper.png"},
		colors = {},
		is_visible = true,
		makes_footstep_sound = true,
		automatic_rotate = false,
		stepheight = 0,
		automatic_face_movement_dir = false,
		armor_groups = {immortal=1},
		animation = {
			--[[stand_START = 0,
			stand_END = 79,
			sit_START = 81,
			sit_END = 160,
			lay_START = 162,
			lay_END = 166,
			walk_START = 168,
			walk_END = 187,
			mine_START = 189,
			mine_END = 198,
			run_START = 221,
			run_END = 240,]]
		},
		--animation_speed = 12,
		decription = "Test NPC",
		show_nametag = true,
		inventory_image = "npcf_inv_top.png",
		nametag_color = "white",
		metadata = {
			free_roaming = "false",
			follow_players = "false",
			anim_stop = "Stand",
		},
		var = {
			speed = 1,
			avoid_dir = 1,
			last_pos = {x=0,y=0,z=0},
			target = nil,
		},
		--[[initial_properties {
			hp_max = 200,
			hp = 200
		},]]
		on_activate = function(self, data)
			--this is called when the entity is spawned, and loaded in!
			--the data, is the serialized data! deserialize before use
			print("activate?")
		end,
		on_step = function(self, dtime)

		end,
		on_punch = function(self, puncher, time_from_last_punch,
		tool_capibilities, dir)

		end,
		on_rightclick = function(self, clicker)
			--self.object:remove()
			print("setting bone position?!")
			self.object:set_bone_position("head", {x=math.random(1000), y=math.random(1000), z=math.random(1000)}, {x=math.random(1000), y=math.random(1000), z=math.random(1000)})
			print(tostring(self))

			for i, v in pairs(self) do
				print("self["..i.."] = ", v)
			end
		end,
		on_staticdata = function(self)
			print("static data?")--this is used to serialize the data! must return serialized string!
		end,
		on_step = function(self, dtime)
			--print("self: "..tostring(self))
			--print("self.object: "..tostring(self.object))
		end
	}
)



minetest.register_abm(
	{
		nodenames = {
			"testmod:decowood"
		},
		interval = 2,
		chance = 10,
		action = function(pos)
			pos.y = pos.y+1
			minetest.add_entity(pos, "better_minetest_test:testentity")
		end
	}
)