Improvement EA "CloseTrades_After_Account_Profit_Reached"

Hallo,

there is a free  EA on the market called  "CloseTrades_After_Account_Profit_Reached". A nice and small EA. It closes all trades, also those in loss, if a certain amount of win is given.

I need followed improvement:

Instead of  a fix amount of win to close all open Trades I would like to have a kind of "Trailing Stop" for this amount. So. if the winning amount ascends, the fix amount should not stop the winning situation. Only after a certain amount back of the winning trend all the open Trades shell be closed. I need this EA as fast as possible.

Price is a matter of negotiation!

Best Regards. 

If nescessary I can send the MQl4-File of the EA. If I satisfied I do have further (greater) Projekts to code!