/// <summary>
        /// Signals when EMA bands contracting
        /// </summary>
        /// <returns></returns>
        public ZZTighteningMABands ZZTighteningMABands(Data.IDataSeries input, bool alertOn, int eMAlongLen, int eMAmedLen, int eMAshortLen)
        {
            if (cacheZZTighteningMABands != null)
            {
                for (int idx = 0; idx < cacheZZTighteningMABands.Length; idx++)
                {
                    if (cacheZZTighteningMABands[idx].AlertOn == alertOn && cacheZZTighteningMABands[idx].EMAlongLen == eMAlongLen && cacheZZTighteningMABands[idx].EMAmedLen == eMAmedLen && cacheZZTighteningMABands[idx].EMAshortLen == eMAshortLen && cacheZZTighteningMABands[idx].EqualsInput(input))
                    {
                        return(cacheZZTighteningMABands[idx]);
                    }
                }
            }

            lock (checkZZTighteningMABands)
            {
                checkZZTighteningMABands.AlertOn = alertOn;
                alertOn = checkZZTighteningMABands.AlertOn;
                checkZZTighteningMABands.EMAlongLen = eMAlongLen;
                eMAlongLen = checkZZTighteningMABands.EMAlongLen;
                checkZZTighteningMABands.EMAmedLen = eMAmedLen;
                eMAmedLen = checkZZTighteningMABands.EMAmedLen;
                checkZZTighteningMABands.EMAshortLen = eMAshortLen;
                eMAshortLen = checkZZTighteningMABands.EMAshortLen;

                if (cacheZZTighteningMABands != null)
                {
                    for (int idx = 0; idx < cacheZZTighteningMABands.Length; idx++)
                    {
                        if (cacheZZTighteningMABands[idx].AlertOn == alertOn && cacheZZTighteningMABands[idx].EMAlongLen == eMAlongLen && cacheZZTighteningMABands[idx].EMAmedLen == eMAmedLen && cacheZZTighteningMABands[idx].EMAshortLen == eMAshortLen && cacheZZTighteningMABands[idx].EqualsInput(input))
                        {
                            return(cacheZZTighteningMABands[idx]);
                        }
                    }
                }

                ZZTighteningMABands indicator = new ZZTighteningMABands();
                indicator.BarsRequired        = BarsRequired;
                indicator.CalculateOnBarClose = CalculateOnBarClose;
#if NT7
                indicator.ForceMaximumBarsLookBack256 = ForceMaximumBarsLookBack256;
                indicator.MaximumBarsLookBack         = MaximumBarsLookBack;
#endif
                indicator.Input       = input;
                indicator.AlertOn     = alertOn;
                indicator.EMAlongLen  = eMAlongLen;
                indicator.EMAmedLen   = eMAmedLen;
                indicator.EMAshortLen = eMAshortLen;
                Indicators.Add(indicator);
                indicator.SetUp();

                ZZTighteningMABands[] tmp = new ZZTighteningMABands[cacheZZTighteningMABands == null ? 1 : cacheZZTighteningMABands.Length + 1];
                if (cacheZZTighteningMABands != null)
                {
                    cacheZZTighteningMABands.CopyTo(tmp, 0);
                }
                tmp[tmp.Length - 1]      = indicator;
                cacheZZTighteningMABands = tmp;
                return(indicator);
            }
        }
        /// <summary>
        /// Signals when EMA bands contracting
        /// </summary>
        /// <returns></returns>
        public ZZTighteningMABands ZZTighteningMABands(Data.IDataSeries input, bool alertOn, int eMAlongLen, int eMAmedLen, int eMAshortLen)
        {
            if (cacheZZTighteningMABands != null)
                for (int idx = 0; idx < cacheZZTighteningMABands.Length; idx++)
                    if (cacheZZTighteningMABands[idx].AlertOn == alertOn && cacheZZTighteningMABands[idx].EMAlongLen == eMAlongLen && cacheZZTighteningMABands[idx].EMAmedLen == eMAmedLen && cacheZZTighteningMABands[idx].EMAshortLen == eMAshortLen && cacheZZTighteningMABands[idx].EqualsInput(input))
                        return cacheZZTighteningMABands[idx];

            lock (checkZZTighteningMABands)
            {
                checkZZTighteningMABands.AlertOn = alertOn;
                alertOn = checkZZTighteningMABands.AlertOn;
                checkZZTighteningMABands.EMAlongLen = eMAlongLen;
                eMAlongLen = checkZZTighteningMABands.EMAlongLen;
                checkZZTighteningMABands.EMAmedLen = eMAmedLen;
                eMAmedLen = checkZZTighteningMABands.EMAmedLen;
                checkZZTighteningMABands.EMAshortLen = eMAshortLen;
                eMAshortLen = checkZZTighteningMABands.EMAshortLen;

                if (cacheZZTighteningMABands != null)
                    for (int idx = 0; idx < cacheZZTighteningMABands.Length; idx++)
                        if (cacheZZTighteningMABands[idx].AlertOn == alertOn && cacheZZTighteningMABands[idx].EMAlongLen == eMAlongLen && cacheZZTighteningMABands[idx].EMAmedLen == eMAmedLen && cacheZZTighteningMABands[idx].EMAshortLen == eMAshortLen && cacheZZTighteningMABands[idx].EqualsInput(input))
                            return cacheZZTighteningMABands[idx];

                ZZTighteningMABands indicator = new ZZTighteningMABands();
                indicator.BarsRequired = BarsRequired;
                indicator.CalculateOnBarClose = CalculateOnBarClose;
#if NT7
                indicator.ForceMaximumBarsLookBack256 = ForceMaximumBarsLookBack256;
                indicator.MaximumBarsLookBack = MaximumBarsLookBack;
#endif
                indicator.Input = input;
                indicator.AlertOn = alertOn;
                indicator.EMAlongLen = eMAlongLen;
                indicator.EMAmedLen = eMAmedLen;
                indicator.EMAshortLen = eMAshortLen;
                Indicators.Add(indicator);
                indicator.SetUp();

                ZZTighteningMABands[] tmp = new ZZTighteningMABands[cacheZZTighteningMABands == null ? 1 : cacheZZTighteningMABands.Length + 1];
                if (cacheZZTighteningMABands != null)
                    cacheZZTighteningMABands.CopyTo(tmp, 0);
                tmp[tmp.Length - 1] = indicator;
                cacheZZTighteningMABands = tmp;
                return indicator;
            }
        }