Multiple Pairs Conter Trend EA

In need to develop an EA for multiple pairs. No indicator involved based on following users inputs and conditions:

User inputs:

1. Trading Timeframe: tf

2. Look back how many bars in history: counterbar

3. Starting lotsize: lot

4. Lot increase multiple factor: lotfactor.

5. Take Profit pips: takeProfit

6. Stop open new position when margin level below x%: 400$

7. Maximum Open position per pair: maximumOpenPositionPerPair

8. Trading Pairs:EURUSD, GPBUSD,AUDUSD, etc. 

Trading conditions:

1. OnTick, calculate  Highprice and Lowprice based  last counterbar,  if high[0] price > Highprice, Highprice=high[0]. if low[0] <Lowprice, Lowprice=low[0]. 

2. If Bid > Highprice - (Highprice -Lowprice) *11/12, open sell position if no open sell position exists. If open sell  position exist, (Bid -LastOrderPrice) > (Highprice -Lowprice)/2.

3. If Ask < Lowprice + (Highprice -Lowprice) *11/12, open buy position if no open buy position exists. If open buy position exist, (LastOrderPrice - Ask) > (Highprice -Lowprice)/2. 

4. Set all open positions Take profit based on average Price + TakeProfit for buy and average Price - TakeProfit for sell.

5. If maximumOpenPositionPerPair reach, no more position open for this pair,

6. if margin level below X%, no more new position can be opened.