I want to turn it to a robot.

Open a Buy and Sell order at the same time with same TP x pips and same SL x pips( I also use a indicator stop loss like MA).

Once one of the two open orders hit TP or SL, Immediately the other opened order's TP is modified. SL is still remain same or can be changed. Daynamic SL like ATR doesn't need change every bar.

I want to do it on every new bar, when my condition met.
Is it possible?

Also please explain how different lots are used.
For example, when a condition is met, more lots are used than the other trade lots. I want to do it on every new candle, when I open both trades at the same time.

Thanks in advance.