Thank you for your answer.
I will explain EA that we want with details.
For example; price has decreased from 0,9155 to 0,9091 so price has gone on 0,9143 , 0,9123 , and 0,9103 .Our EA has made BUY order on 0,9143 , 0,9123 and 0,9103. And after that price has increased form 0,9091 to 0,9115 , our EA will not make BUY order again on 0,9103. Because price has not reached to 0,9083 or 0,9123 . But, price has increased from 0,9115 to 0,9130, EA will make order on 0,9123 . After that price has decreased from 0,9130 to 0,9105, EA will not make BUY order again on 0,9123. Because price has not reached 0,9143. It will make BUY order only on 0,9103 .
We want to also testing option on real history of forex trading of MetaTrader4 (For example: We want to try this EA between 01.01.2011 and 01.01.2012 or 01.01.2012 and 01.02.2012) .
This EA can be readable and writable from us like pip deviations, TP and SL points, lot size, BUY order price and SELL order price ….
It will be designed for MetaTrader4.
Also, this EA will give permit to open BUY and SELL orders at the same time and at the same price. That is, this EA will make BUY and SELL orders at the same price on same account.
And also some details; we will decide the first price with watching forex market and we will create this first price manually. That is, this EA will give permission for determining the first price. Also we want to stop point (optionally, we will use or not this option) for this EA (on any price that we can determine), if we want to finish this trading system. Finally, EA can be used any currency like EUR/USD, USD/CHF….