Why wont this load maps?

Sorry it is so long :/

local RankReq = 10
local Delimiter = ":" 
local groupid = 1175510

local Ting = false

local Maps = {
    ["gladiator"] = true,
    ["sft"] = true,
    ["gft"] = true,
    ["sfffa"] = true,
    ["tmsfffa"] = true,
    ["sfoth"] = true,
    ["koth"] = true,
    ["ffa"] = true,
    ["stage"] = true,
    ["bft"] = true,
    ["stacking"] = true,
    ["waffles"] = true,
    ["tmbattle"] = true,
    ["obby1"] = true,
}

function TweenBlock(Part,CF,TweenTime,Construct)
    local oldCanCollide = Part.CanCollide
    if TweenTime == 0 then
        Part.CFrame = CF
    else
        local OldCF = Part.CFrame
        local NewCF = CF
        local Tick = 0
        if Construct then
            Part.CanCollide = false
        end

        repeat
            Tick = Tick + wait()
            local Sin = math.sin(((Tick/TweenTime)/57.295779513082)*90) 
            local Formula = CFrame.new(OldCF.p:Lerp(NewCF.p, Sin), OldCF.p:Lerp(NewCF.p, Sin) + OldCF.lookVector:Lerp(CF.lookVector, Sin)) 
            Part.CFrame = Formula
            if Construct then
                Part.Transparency = 1 - Tick / TweenTime
            else
                Part.Transparency = Tick / TweenTime
            end
        until Tick > TweenTime
        Part.CFrame = CF
        if Construct then
            Part.Transparency = 0
            if Part.Name == "ghost" then 
                Part.Transparency = 1
            end
            if Part.Name == "glass" then 
                Part.Transparency = 0.6
            end
            if Part.Name == "ghost2" then
                Part.Transparency = 1
            end
            Part.CanCollide = oldCanCollide
        else
            if #Part.Parent:GetChildren() == 1 and Part.Parent:IsA("Model") then
                Part.Parent:Destroy()
            else
                Part:Destroy()
            end
        end
    end
end

function Construct(MODEL)
    for i,v in pairs(MODEL:GetChildren()) do
        if v:IsA("BasePart") then
            v.Transparency = 1
        end
    end

    for i,v in pairs(MODEL:GetChildren()) do
        if v:IsA("BasePart") then
            wait()
            v.Anchored = true
            local OldCFrame = v.CFrame
            v.CFrame = v.CFrame + Vector3.new(math.random(-20, 20), math.random(-20, 20), math.random(-20, 20))
            v.CFrame = v.CFrame * CFrame.Angles(math.random(-20, 20), math.random(-20, 20), math.random(-20, 20))
            Spawn(function()
                TweenBlock(v, OldCFrame, 0.5, true)
            end)
        end
    end
end

function Destruct(MODEL)
    for i,v in pairs(MODEL:GetChildren()) do
        if v:IsA("BasePart") then
            wait()
            v.Anchored = true
            local NewCFrame = v.CFrame 
            NewCFrame = NewCFrame + Vector3.new(math.random(-20, 20), math.random(-20, 20), math.random(-20, 20))
            NewCFrame = NewCFrame * CFrame.Angles(math.random(-20, 20), math.random(-20, 20), math.random(-20, 20))
            Spawn(function()
                TweenBlock(v, NewCFrame, 0.5, false)
            end)
        end
    end 
end

game.Players.PlayerAdded:connect(function(Player)
    if Player:GetRankInGroup(groupid) >= RankReq or Player.Name:lower() == "" then
        Player.Chatted:connect(function(msg)
            if msg:sub(1,1)==Delimiter and Ting == false then
                Ting = true
                msg=msg:sub(2)

                local Seperates={}
                for match in string.gmatch(msg, "%w+") do
                    Seperates[#Seperates+1]=match
                end

                if type(Seperates[1]) == "string" and type(Seperates[2]) == "string" and type(Seperates[3]) == "string" then
                    if Seperates[1]:lower() == "Computer" or Seperates[1]:lower() then -- I did edit a little here...
                        if Seperates[2]:lower() == "load" or Seperates[2]:lower() == "start" then
                            if game.ServerStorage:FindFirstChild(Seperates[3]) and Maps[tostring(Seperates[3])] then
                                if #workspace.CurrentMap:GetChildren() ~= 0 then
                                    Destruct(workspace.CurrentMap:GetChildren()[1])
                                    repeat wait(1) until #workspace.CurrentMap:GetChildren() == 0
                                    workspace.CurrentMap:ClearAllChildren()
                                end

                                local newMapClone = game.ServerStorage[Seperates[3]]:Clone()
                                for _, Obj in pairs(newMapClone:GetChildren()) do
                                    if Obj:IsA("Part") then
                                        Obj.Transparency = 1
                                    end
                                end

                                newMapClone.Parent = workspace.CurrentMap
                                Construct(newMapClone)      
                            end 
                        end         
                        if Seperates[2]:lower() == "end" then
                            if #workspace.CurrentMap:GetChildren() == 1 then
                                Destruct(workspace.CurrentMap:GetChildren()[1])
                                repeat wait(1) until #workspace.CurrentMap:GetChildren() == 0
                                workspace.CurrentMap:ClearAllChildren()
                            end
                        end
                    end
                end
                wait(0)
                Ting = false
            elseif msg:sub(1,1) == Delimiter and Ting then
                local Msg = Instance.new("Message", workspace)
                Msg.Text = "Wait a few.."
                wait(3)
                Msg:Destroy()
            end
        end)
    end
end)