Example Lua

--Door that needs a key to open
local part = script.Parent

local wall = game.Workspace.Wall

local canOpen = true



local function lift(otherPart)

    local partParent = otherPart.Parent

    local humanoid = partParent:FindFirstChildWhichIsA("Humanoid")

    if humanoid and canOpen then

        local player = game.Workspace:FindFirstChild(partParent.Name)

        if player then

            if player:FindFirstChild('Key') then

                canOpen = false

                wall.Transparency = 1

                wall.CanCollide = false

                local key = player:FindFirstChild('Key')

                key.Parent = game.Workspace

                key.Handle.Position = Vector3.new(math.random(x1,x2),5,math.random(z1,z2))

                wait(2)

                wall.Transparency = 0

                wall.CanCollide = true

                canOpen = true

            end

        end

    end

end



part.Touched:Connect(lift)