Simple EA that places pending orders upon a trade execution

I would like a simple grid type EA, that will sell above and buy below starting price (or vice versa). As price triggers the pending order, upon trade completion, a pending order is placed at the previous level. So when a pending sell is completed, a pending buy is placed at the previous grid level, (and vice versa). So whenever a trade is made at any grid level, there's always a pending buy and sell at adjacent levels. I'm a futures trader, don't quite understand currency pair trading, so optimized for EP and NQ would be great, for example ticks or points instead of pips if possible, whole integer lot size.

Inputs:

Buy below/Sell above or Sell below/buy above

Stop or Limit pending orders for each

Grid Interval

Max grid levels

Lot size

TP value

SL value

Trailing SL value

Netting account only. Backtest and Demo funtional. Access to code on completion.