Only trade when current period heiken Ashi over a certain length, only for the duration of the following period

Hi, 

I am looking for someone to help coding the following idea: 

Place a trade on if:

-Current period heikin Ashi reaches over a certain length

- Place an order in the same direction as current Heikin Ashi candle

-  Always close order (Take profit - or loss - hopefully very seldom)  when next period heikin ashi candle closes. So order always lasts 1 following to current time period (or definable periods if possible)

The above idea is based on a general oservation that HA candle change colour this typically happens on a relatively small "current" candle. 

I would appreciate any help on this subject and will be more than happy to supply results.