-- SERVER CODE

function setstuff()

ply:SetNetworkedInt("spawntimer",CurTime()+10) -- 10 seconds

end

-- CLIENT CODE
function GM:HudPaint()
local endtime=LocalPlayer:GetNetworkedInt("spawntimer",-1) -- if it isn't set, it is -1
if endtime~=-1 then
if endtime<CurTime() then
local secondsremaining=endtime-CurTime()
-- draw your HUD stuff here
else
LocalPlayer:SetNetworkedInt("ending",-1) -- we don't want to use it anymore
end
end 
end