Tool plays one animation, but not any other animation?

[SlavicDeveloper]

I’m trying to make a sword that makes a horizontal swing animation. The original animation for the classic roblox sword makes it swing down and it works, however when I change the animation ID to my animation of the sword swinging sideways, nothing happens? I’ve tried placing print statements in front of the different parts that include the animation and all of them play just fine. The animations seem to play but I see nothing. I’m not sure why nothing is happening, so here is the code:

local Tool = script.Parent
local Handle = Tool:WaitForChild("Handle")

local humanoidsTouchedBySwing = {}
local currentlySwinging = false

function Create(ty)
	return function(data)
		local obj = Instance.new(ty)
		for k, v in pairs(data) do
			if type(k) == 'number' then
				v.Parent = obj
			else
				obj[k] = v
			end
		end
		return obj
	end
end

local BaseUrl = "rbxassetid://"

local Players = game:GetService("Players")
local Debris = game:GetService("Debris")
local RunService = game:GetService("RunService")

local Damage = 10

-- For R15 avatars
local Animations = {
	R15Slash = 13850861557
	-- 522635514   <OLD ANIMATION ID (is working)
	-- 13850861557  <NEW ANIMATION ID (not working)
}

local Grips = {
	Up = CFrame.new(0, 0, -1.70000005, 0, 0, 1, 1, 0, 0, 0, 1, 0),
	Out = CFrame.new(0, 0, -1.70000005, 0, 1, 0, 1, -0, 0, 0, 0, -1)
}

local Sounds = {
	Slash = Handle:WaitForChild("SwordSlash"),
	Unsheath = Handle:WaitForChild("Unsheath")
}

local ToolEquipped = false
local Character, Player, Humanoid, Torso
local Track

Tool.Grip = Grips.Up

function IsTeamMate(Player1, Player2)
	return (Player1 and Player2 and not Player1.Neutral and not Player2.Neutral and Player1.TeamColor == Player2.TeamColor)
end

function TagHumanoid(humanoid, player)
	local Creator_Tag = Instance.new("ObjectValue")
	Creator_Tag.Name = "creator"
	Creator_Tag.Value = player
	Debris:AddItem(Creator_Tag, 2)
	Creator_Tag.Parent = humanoid
end

function UntagHumanoid(humanoid)
	for i, v in pairs(humanoid:GetChildren()) do
		if v:IsA("ObjectValue") and v.Name == "creator" then
			v:Destroy()
		end
	end
end

local function CheckIfAlive()
	return (((Player and Player.Parent and Character and Character.Parent and Humanoid and Humanoid.Parent and Humanoid.Health > 0 and Torso and Torso.Parent) and true) or false)
end

function Blow(Hit)
	if not Hit or not Hit.Parent or not CheckIfAlive() or not ToolEquipped then
		return
	end
	local RightArm = Character:FindFirstChild("Right Arm") or Character:FindFirstChild("RightHand")
	if not RightArm then
		return
	end
	local RightGrip = RightArm:FindFirstChild("RightGrip")
	if not RightGrip or (RightGrip.Part0 ~= Handle and RightGrip.Part1 ~= Handle) then
		return
	end
	local character = Hit.Parent
	if character == Character then
		return
	end
	local humanoid = character:FindFirstChildOfClass("Humanoid")
	if not humanoid or humanoid.Health == 0 then
		return
	end
	local player = Players:GetPlayerFromCharacter(character)
	if player and (player == Player or IsTeamMate(Player, player)) then
		return
	end
	local alreadyTouchedThisSwing = false
	for i, v in ipairs(humanoidsTouchedBySwing) do
		if v == humanoid then
			alreadyTouchedThisSwing = true
		end
	end
	if alreadyTouchedThisSwing == true then
		return
	end
	if currentlySwinging == false then
		return
	end
	UntagHumanoid(humanoid)
	TagHumanoid(humanoid, Player)
	table.insert(humanoidsTouchedBySwing, humanoid)
	humanoid:TakeDamage(Damage)
end

local function Attack()
	Sounds.Slash:Play()
	--[[
	if Humanoid and Humanoid.RigType == Enum.HumanoidRigType.R15 and Track then
		Track:Play(0)
	end
	--]]
end

local lastAttackTime = time()

local function HandleAnimationStopped()
	currentlySwinging = false
	humanoidsTouchedBySwing = {}
end

local function Activated()
	if time() - lastAttackTime <= 0.5 or not ToolEquipped or not CheckIfAlive() then
		return
	end
	currentlySwinging = true
	lastAttackTime = time()
	Attack()
	local SlashAnim = (Tool:FindFirstChild("R15Slash") or Create("Animation") {
		Name = "R15Slash",
		AnimationId = BaseUrl .. Animations.R15Slash,
		Parent = Tool
	})

	if Humanoid and Humanoid.RigType == Enum.HumanoidRigType.R15 and SlashAnim then
		local AnimationTrack = Humanoid:LoadAnimation(SlashAnim)
		AnimationTrack:Play(0)
		AnimationTrack.Stopped:Connect(HandleAnimationStopped)
	end
end





local function Equipped()
	Character = Tool.Parent
	Player = Players:GetPlayerFromCharacter(Character)
	Humanoid = Character:FindFirstChildOfClass("Humanoid")
	Torso = Character:FindFirstChild("HumanoidRootPart") or Character:FindFirstChild("Torso")
	if not CheckIfAlive() then
		return
	end
	ToolEquipped = true
	Sounds.Unsheath:Play()

	local animation = Instance.new("Animation")
	animation.AnimationId = BaseUrl .. Animations.R15Slash
	Track = Humanoid:LoadAnimation(animation)
	Track.Stopped:Connect(HandleAnimationStopped)
end

local function Unequipped()
	Tool.Grip = Grips.Up
	ToolEquipped = false
end

Tool.Activated:Connect(Activated)
Tool.Equipped:Connect(Equipped)
Tool.Unequipped:Connect(Unequipped)
Handle.Touched:Connect(Blow)

[F0ZYAN (FOZY)]

Make sure that the Animation ID for the sideways swing animation is correctly specified. Verify that the animation with that ID is uploaded to Roblox. Ensure that the animation is compatible with the humanoid rig type used in your game. Check that the animation object has the correct name and is located in the proper place in the tool’s hierarchy. Verify the loading of the animation and the handling of animation events in your code.

[SlavicDeveloper]

I have figured out the solution, the problem was that I had the animation priority set to Core, I made an animation with the animation priority set as Action and the problem is fixed.