Need help with this custom animation code?

When the player types "/e dance3' I was expecting it to play one of my custom animations.

Heres the code

game.Players.PlayerAdded:connect(function(Plr)
Plr.Chatted:connect(functiom(msg)
if msg == "/e dance3" then
A = Instance.new("Animation", Plr.Character)
A.AnimationId = "www.roblox.com/Asset?ID=myidwillgohere" 
track = Plr.Character.Humanoid:LoadAnimation(A)
track:Play()
end
end)
end)

Getting error from "if"

Also how do I get the asset ID from a custom animation? Do I just use the one available on my profile? I cant find the asset URL anywhere.

Thanks.