Why can I not destroy a map in a game?

So I am making a game and I have a maps that are randomly picked and after the round I am trying to destroy them with :Destroy() but it wont work. Can someone help me with this? Everything else works except this.

Code

Maps = {"Campout", "Pyramid", "Temple"}
intermission = 5 -- time until flood comes
gamewait = 5 -- how long the flood stays
numofplayers = 1 -- How many players are required to play
timebeforeround = 5 --Time before flood
    wait()    

function m(update)
    c = game.Players:GetChildren()
    for i=1, #c do
           c[i].PlayerGui.InformationGui.Frame.TextLabel.Text = "" .. update
    end
end



while true do
    wait(1)
    if game.Players.NumPlayers >= numofplayers then

    for i=1, intermission do
        wait()
        m("The next flood will strike in: " .. intermission -i)
        wait(1)
    end

    pl = game.Players:GetChildren()

    for i=1, #pl do
        pl[i].Playing.Value = true
    end


    rndum = math.random(#Maps)
    cmap = Maps[rndum] -- This picks a random map

    game.Lighting[cmap]:Clone().Parent = game.Workspace

    m("Picking a map .")
    wait(1)
    m("Picking a map ..")
    wait(1)
    m("Picking a map ...")
    wait(1)
    m("The chosen map is " .. cmap)
    wait(2)

    plpl = game.Players:GetChildren()

    for i=1, #plpl do
    if plpl[i].Playing.Value == true then
        cspawn = game.Workspace.Part
        target = CFrame.new(cspawn.Position)
for i, player in ipairs(game.Players:GetChildren()) do
   if player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
      player.Character.HumanoidRootPart.CFrame = target + Vector3.new(0, i * 5, 0)
   end
end

        --plpl[i].Character.Humanoid.WalkSpeed = 0
    end
    end


for i=1, timebeforeround do
    m("The Flood is coming in " .. timebeforeround - i)
    wait(1)
end 

m("It's here!")
local platform = workspace.Place.Platform
platform.Material = "Foil"
platform.Size = Vector3.new(500,100,300)
local storage = game:GetService("Lighting")
local part = storage["Kill"]:clone()
part.Parent = platform
part.Disabled = false

wait(1)

getlpa = game.Players:GetChildren()


for i=1, #getlpa do
    if getlpa[i].Playing.Value == true then
    getlpa[i].Character.Humanoid.WalkSpeed = 16
    lp = getlpa[i]:GetChildren()
    for b=1, #lp do
        --if lp[b].ClassName == "Tool" then
        --lp[b]:Clone().Parent = getlpa[i].Backpack
        end
    end
    end
end



    for i=1, gamewait do
        m("The Flood ends in: " .. gamewait - i)
        wait(1)
    end


    getlpas = game.Players:GetChildren()

    m("The Flood is gone.")
    local platform = workspace.Place.Platform
platform.Material = "Cobblestone"
platform.Size = Vector3.new(500,2,300)
platform.Kill:Destroy()
cmap = Maps[rndum] -- This picks a random map
cmap:Destroy(cmap)
cmap.Parent = workspace
end