How Would i be able to Play an Animation?

game:GetService("UserInputService").InputBegan:connect(function(Key)
   if Key.KeyCode == Enum.KeyCode.H then
     local char = game.Players.LocalPlayer.Character
     local humanoid = char.Humanoid
     local id = "http://www.roblox.com/asset?id=294995580"
     local ani = Instance.new("Animation")
    ani.AnimationId = id
    local loadAnimation = humanoid:LoadAnimation(ani)
    loadAnimation:Play()
   end
end)

Try this.