Why does my head only move when I play a animation inside of a tool?

Hello, I have made a animation (part of a tool) where it makes the right arm move into a position where it looks like you are eating something and it also moves the head down a slight bit. When I play the animation in game, it doesn't move my right arm, but only my head. Here's the script if you need it, I have no idea why this wont work. Please help!

local tool = script.Parent
local event = game.ReplicatedStorage.TacoEvent
local debounce = false

tool.Activated:Connect(function()
if not debounce then
debounce = true
event:FireServer()
tool.Sound:Play()
wait(1)
debounce = false
end	
end)

tool = script.Parent
local sword = true
tool.Activated:Connect(function()
	if sword == false then return end
	sword = false
	local char = tool.Parent
	local hum = char.Humanoid
	
	local anim = hum:LoadAnimation(script.Parent.Animation)
	anim:Play()
	wait(1)
	sword = true
end)