Two loops in short succession, Logic help?

Hi all,

need help with this logical conundrum. (simplified for ease of solution).

For the purpose of the solution imagine both clients are running in the same script.

--Client 1

function TimeOut(secs)
    TimeOutEnd = false
    coroutine.resume(coroutine.create(function()
        for i = secs, 0, -1 do
            if TimeOutEnd then return end
            --irrelevant
        end
    end))
end

--Client 2

TimeOut(20)

-- this function will most likely fire before the original TimeOut function has completed it's cycle.

button.MouseButton1Click:connect(function()
    TimeOutEnd = true
    TimeOut(20)
end

What I would want is for the original TimeOut sequence to terminate it's cycle, and a new cycle to begin once again. Now the example above won't work because the means the instantaneous change from true back to false will have no effect with the one second interval.

I'd prefer not to yield the existing coroutine as I don't want useless threads lying around.

Thanks for your help guysh.