[FIXED]why doesn't my animation play when clicked?

this is my script

------------------< variables >----------------
local uis = game:GetService("UserInputService")
local saber = script.Parent
local p = game.Players.LocalPlayer
local l = p.leaderstats
local equipped = false
local textBox = game.StarterGui.Strenght.TextLabel
local anim = script.Parent:WaitForChild("SwingAnimation")
------------------< code >---------------------
saber.Equipped:Connect(function()
    equipped = true
end)
saber.Unequipped:Connect(function()
    equipped = false
end)
uis.InputBegan:Connect(function(input1)
    local mouseIn1 = input1.UserInputType
    if equipped == true and mouseIn1 == Enum.UserInputType.MouseButton1 then
        l.Strenght.Value = l.Strenght.Value + 5
        local loadedAnim = p.Character.Humanoid:LoadAnimation(anim)
        loadedAnim:Play()
    end
end)

it's a local script and it's parented to a tool. all the parts work, exept the animation part. what did i do wrong?