Modify an existing Ea (latecy arbitrage system)

Hello developers, i have an latency arbitrage system, that i want to modify.

This expert read a quote from mt4 and write a .txt file with "ask;bid". the name of the .txt file is the same of chart.

I want to modify this name and write the .txt file with a specific name (for example, i read quote from chart xauusd, now the expert write quote on a .txt file that is "xauusd.txt", but 

i want that the file is "gold.txt" for example, so i put "gold" in the expert and the robot write the gold.txt file).

Then I want a second version where I add stop loss, take profit and trailing (at the moment the robot works without these parameters, it closes the trade as soon as possible when prices

converge to parity). Furthermore, I will have to insert a parameter in which, if activated, the robot keeps the trade open for at least X seconds (it only closes first if it touches the stop loss).