Can you help me correct my LocalScript animation script ?

player = game.Players.LocalPlayer

local Block = player.Character.Humanoid:LoadAnimation(4819470970)
local Weaponblock = player.Character.Humanoid:LoadAnimation(4819498690)
local Weaponblockshield = player.Character.Humanoid:LoadAnimation(4819501037)
local Stance = player.Character.Humanoid:LoadAnimation(4812358432)

local m = {}

function m.PlayAnimation(anim)
    local success,err = pcall(function()
        if anim == "Block" and Block ~= nil then
            Block:Play()
        end
        if anim == "Weaponblock" and Weaponblock ~= nil then
            Weaponblock:Play()
        end
        if anim == "Weaponblockshield" and Weaponblockshield ~= nil then
            Weaponblockshield:Play()
        end
        if anim == "Stance" and Stance ~= nil then
            Stance:Play()
        end
    end)
end

function m.StopAnimation(anim)
    local success,err = pcall(function()
        if anim == "Block" and Block ~= nil then
            Block:Stop()
        end
        if anim == "Weaponblock" and Weaponblock ~= nil then
            Weaponblock:Stop()
        end
        if anim == "Weaponblockshield" and Weaponblockshield ~= nil then
            Weaponblockshield:Stop()
        end
        if anim == "Stance" and Stance ~= nil then
            Stance:Stop()
        end
    end)
end

function m.SetAnimation(anim, id)
    local success,err = pcall(function()
        if anim == "Block" then
            Block = id
        end
        if anim == "Weaponblock" then
            Weaponblock = id
        end
        if anim == "Weaponblockshield" then
            Weaponblockshield = id
        end
        if anim == "Stance" then
            Stance = id
        end
    end)
end

function m.StopAll()
    local success,err = pcall(function()
        Block:Stop()
        Weaponblock:Stop()
        Weaponblockshield:Stop()
        Stance:Stop()
    end)
end

return m