Need simple LUA Help

[Chas3down]

function HunterRotation:OnInitialize()
	self:RegisterEvent("COMBAT_LOG_EVENT");	
	HunterRotation:RegisterChatCommand("on", "On");
	HunterRotation:RegisterChatCommand("off", "Off");
end

function HunterRotation:COMBAT_LOG_EVENT()
--My stuff here
end

So, how can I add a wait or something so COMBAT_LOG_EVENT is only called every 200ms?