Customised Heikin Ashi candle in Metastock

I am looking for a Heikin Ashi convertor which smothens the data three times i.e. FIRST STEP OHLC is converted to Heikin Ashi -1 SECOND STEP Heikin Ashi -1 is converted to Heikin Ashi -2 THIRD STEP Heikin Ashi -2 is converted to Heikin Ashi -3 The formulas for calculation of Heikin Ashi are as follows:- 1. The Heikin-Ashi Close is simply an average of the open, high, low and close for the current period. HA-Close = (Open(0) + High(0) + Low(0) + Close(0)) / 4 2. The Heikin-Ashi Open is the average of the prior Heikin-Ashi candlestick open plus the close of the prior Heikin-Ashi candlestick. HA-Open = (HA-Open(-1) + HA-Close(-1)) / 2 3. The Heikin-Ashi High is the maximum of three data points: the current period's high, the current Heikin-Ashi candlestick open or the current Heikin-Ashi candlestick close. HA-High = Maximum of the High(0), HA-Open(0) or HA-Close(0) 4. The Heikin-Ashi low is the minimum of three data points: the current period's low, the current Heikin-Ashi candlestick open or the current Heikin-Ashi candlestick close. HA-Low = Minimum of the Low(0), HA-Open(0) or HA-Close(0)