(binned as duplicate) Need Help: Close only Open Trades that Open

Hi Coders, I plan to design a simple EA to open trades at each new bar's open and to be closed on next new bar's open. My problem is facing that there may be repeating closing of trades at new bar's open because the EA may :-

1) close the last bar's open trades, and

2) concurrently close the new bar's new open trades

How to make the EA to recognise the last bar's open trades and only close the last bar's open trades, and do NOT touch on the new bar's new open trades ? I need your advice to provide me the codes to make it happen. Thanks so much.