Playing Animations For An NPC?

I got a script from a wiki and change it a little but im still not sure if you can play Animations for an NPC if it can then this won't work

local equips = Instance.new("Animation")
equips.AnimationId = "http://www.roblox.com/Asset?ID=163203876"

local animation1 = Instance.new("Animation")
animation1.AnimationId = "http://www.roblox.com/Asset?ID=163203876"

local animation2 = Instance.new("Animation")
animation2.AnimationId = "http://www.roblox.com/Asset?ID=163203876"

AttackCoolDown = math.random(2,3)

function equip(Source)
        animTrack2 = script.Parent.AI:LoadAnimation(equips)
        animTrack2.KeyframeReached:connect(function(keyframeName)
            if keyframeName == "ElectrocuteEnd" then
                canPlay = true
            end
        end)    
        animTrack2:Play()
    end

function anim1(Source)
        animTrack1 = script.Parent.AI:LoadAnimation(animation1)
        animTrack1.KeyframeReached:connect(function(keyframeName)
            if keyframeName == "ElectrocuteEnd" then
                canPlay = true
            end
        end)    
        animTrack1:Play()
    end

function anim2(Source)
        animTrack2 = script.Parent.AI:LoadAnimation(animation2)
        animTrack2.KeyframeReached:connect(function(keyframeName)
            if keyframeName == "ElectrocuteEnd" then
                canPlay = true
            end
        end)    
        animTrack2:Play()
    end

equip()

while true do
    Choose = math.random(1,2)
    wait(AttackCoolDown)
    if Choose == 1 then
        anim1()
    elseif Choose == 2 then
        anim2()
    end
end