Trash Can Script Not Working?

It is supposed to remove a empty cup from somones inventory and move it on top of a tray. Can you help me fix?

local mugs = script.Parent.Parent.Mugs
local M1,M2,M3,M4,M5,M6,M7,M8 = mugs.M1,mugs.M2,mugs.M3,mugs.M4,mugs.M5,mugs.M6,mugs.M7,mugs.M8
local enabled = true
local create = Instance.new

function RandPart(obj1)
    local parts = {}
    for _,v in pairs(obj1:GetChildren()) do
        table.insert(parts, v)
    end
    return parts[math.random(1,#parts)]
end

script.Parent.ClickDetector.MouseClick:connect(function(player)
    if player:GetRankInGroup(1107003) == 0 then
        if script.Parent.Parent.Mugs.M8.Transparency == 0 then
            MugsInvis()
            y = player.Backpack
            z = game.Lighting.Tray
            z:Clone().Parent = y
            player.Character.Humanoid:EquipTool(z)  
        end
    end
end)

script.Parent.Touched:connect(function(h)
    if h.Parent ~= nil and h.Parent.Name == "Mug" and h.Parent.Trash.Value == true then
        if enabled then
            enabled = false
            if M1.Transparency == 1 then
                M1.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M2.Transparency == 1 then
                M2.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M3.Transparency == 1 then
                M3.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M4.Transparency == 1 then
                M4.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M5.Transparency == 1 then
                M5.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M6.Transparency == 1 then
                M6.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M7.Transparency == 1 then
                M7.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            elseif M8.Transparency == 1 then
                M8.Transparency = 0
                enabled = true
                h.Parent:Destroy()
            else
                local h = create("Hint", Workspace)
                h.Text = "Employee needed to wash mugs"
                wait(4)
                h:Destroy()
                enabled = true
            end
        end
    end
end)

function MugsInvis()
    for _,v in pairs(script.Parent.Parent.Mugs:GetChildren()) do
        if v:IsA("BasePart") then
            v.Transparency = 0
        end
    end
end