Do you know an EA that does this?

OK, I need an EA to help me trading.
Take this example: I am opening a few trades. I want the last open trade to have a TP of 20pips. BUT, I also want all the other trades to have the TP on the same line with the 20pips of the last trade. It doesn't matter if they have negative TP, the main idea is to exit all trades at once. So basically there might be only one positive (winning) trade - the last one. All the others might have negative TP; that is not important.
Also, if I open another trade and set it's TP the EA should recalculate the others' trades take profits and move the tP line accordingly to the (new) last trade.

So, anyone knows of any EA that can do this trick?
Thank you.

That's a graphic idea
I've started long trades, the first one being the one on top. Opened the long, set the TP.
The price goes down. When it stumbles, I open the second buy. At this point, I set the TP for the second trade and drag the first one to match, so they'll exit the same time. And so on with the third and fourth trades.
I need an EA that moves the TP from the already opened trades to match the TP of the last trade - this will be set manually by me or, if possible, by the same magic EA.