Code is simple, when a player joins moves a model to the position of a value, and then add to the value. The code gives the error in the title.
lobby = game.ReplicatedStorage.Lobby
game.Players.PlayerAdded:connect(function(player)
local i = lobby:Clone()
i.Parent = workspace.Lobbys
i:MoveTo(workspace.Lobbys.lastPosition.Value)
workspace.Lobbys.lastPosition.Value = workspace.Lobbys.lastPosition.Value + 35,0,35
end)
