Round system

--- SERVER SCRIPT
local map           = game:GetService("ServerStorage"):WaitForChild("Map")
local updateTimer   = game:GetService("ReplicatedStorage"):WaitForChild("UpdateTimer")
local canStart      = false
local endRace       = true

while true do
    for i = 10,1,-1 do
        updateTimer:FireAllClients(i)
        wait(1)
    end

    if canStart == true then

        map.Parent = game.Workspace

        for i = 30,1,-1 do
            updateTimer:FireAllClients(i)
            wait(1)
            if endRace == true then
                break
            end
        end

        map.Parent = game.ServerStorage
    end
end


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--- LOCAL SCRIPT
local updateTimer = game:GetService("ReplicatedStorage"):WaitForChild("UpdateTimer")
local timer = script.Parent:WaitForChild("Timer")

updateTimer.OnClientEvent:Connect(function(currentTime)
    timer.Text = currentTime
end)