Trading platform with special characteristic

Hi anyboby,
I may appreciate a lot your help in the following: Does anyone know any trading platform which has the possibility of closing positions according to the profit and not according the price? As to be more specific, suppose we have four open positions at the same time. The aim is to close all of them in case the aggregate profit/loss is e.g. +400$ (no matter if some of them produce losses). Obviously there are many price combinations at which the above aggregate profit is achieved and we cannot place limit orders for each one of them. The solution would be a limit profit order!
It is not so strange. However, I cannot find a trading platform with such a possibility
Thank you

Perhaps you could program your own EA to do so. Look in particular at martingale based EAs that obviously due to the nature of martingale trading, try to close all positions in profit often by setting the target point on all positions accordingly and resetting the TP to suit if a new position in the martingale is entered.

One such EA I played with was called "masyuk". I'm not sure if it's still around for free download though as I couldn't find a link again.