Why wont this :SavePlace() code work?

The code is meant to make it so that that all the parts in Workspace Called "Part" get saved whenever you press z on your keybord.

Player = game.Players.LocalPlayer
mouse = Player:GetMouse()
mouse.KeyDown:connect(function(key)

                if key == "z" then
local c = game.Workspace:GetChildren()
for i = 1, #c do
if (c[i].Name == "Part") then
c[i]:SavePlace(Enum.SaveFilter.SaveAll)
end
end

                end
        end)

Thank you