How to animate an arm that is holding a tool? (with the tool ofcourse)

local tool = script.Parent
local handle = script.Parent:WaitForChild('Handle')

local Debounce = true
local slash = script.Parent:WaitForChild('Slash')

local click = false
local inAttack = false

tool.Activated:connect(function()
	inAttack = true
	if Debounce then
		Debounce = false
		click = true
		print('tool activated')
		
		local plr = game.Players:GetPlayerFromCharacter(tool.Parent)
		
		if plr then	
			handle.Touched:connect(function(hit)
				if inAttack then
					
					print('animation')
				
					-- Animation
						
						local char = plr.Character
						if char then
							local hum = char:WaitForChild('Humanoid')
							local slashTrack = hum:LoadAnimation(slash)
							wait(0.1)
							slashTrack:Play()
						end
					
					-- Tree damage
					
					if hit.Parent and hit.Parent.Name ~= plr.Name and hit.Parent:FindFirstChild('Wood') then
						wait(0.1)
						local HP = hit.Parent.HP
						HP.Value = HP.Value - 30
					end
					
				else
					print(Debounce)
					print(click)
				end
			end)
		end
		
		wait(0.5)
		click = false

		wait(5)

		Debounce = true
	end
end)

Server script inside a tool in starterpack, this script isn't done! The problem is, the animation starts but it doesn't animate the arm holding the tool, and I'm a bit scared that the tool might not animate with it even if it was working, any ideas on how to do it?