tow

mouse = game.Players.LocalPlayer:GetMouse()
function tower(key)
    if key == "e" then
        local tow = Instance.new("Part", workspace)
        tow.Anchored = true
        tow.Material = "Brick"
        tow.Size = Vector3.new(50,2000,50)
        tow.CFrame = game.Players.LocalPlayer.Character.Head.CFrame * CFrame.new(0,-1000,0)
        for i = 1,270 do
            wait()
            tow.CFrame = tow.CFrame * CFrame.new(0,1,0)
        end
    end
end
mouse.KeyDown:connect(tower)