private IEnumerator CountDown(string key, int countDownTime, System.Action ac = null) { isCountDowning = true; int time = countDownTime; while (time > 0) { SetTextContent(key, HelperUtils.hlpGetCountDownTimeOriginalStringMS(time)); yield return(new WaitForSecondsRealtime(1f)); time--; } SetTextContent(key, ""); isCountDowning = false; StopCountDown(key, ac); }