Program an EA

I need program an EA that uses a personal indicator. It would be to buy one pair (or sell) and sell another (or buy, the opposite of the previous order). and multiply lot after X steps/pips (like a kind of martingale). and close all positions with a joint profit that could be trailing profit. Configurable parameters: 1. magic number for orders in one direction (but pair1/sell pair2) and another for the reverse so that they work independently. 2. pairs to configure. 3. suffix or prefix of the pair (.pro .ecn etc) 4. starting lot 5. increment of the lots 6. when the lots are increased (accumulated loss in that set of orders to re-enter using the multiplier in point 5 ) 7. traillng profit (start, min profit, step, and total profit) 8. Parámeters of indicador to enter in One direction. (Value high and low). No stoploss need