负相关系统 (negative correlations System)

Hello everyone, this is my first thread, I'm trying for a few days this system of negative correlations, and I decided to open this thread to be able to discuss ......
the system is to open buy or sell 8 pairs, the pairs are:

eur/usd usd/chf
gbp/usd usd/jpy
gpb/chf eur/gpb
nzd/usd usd/cad

I'm testing with a demo account for 5000 and 0.5 lot pair
..... and just have to wait a profit of 50-100 close all tasks at once, and then start over with a new group buy or sell.
from 28/11/2011 to today I got a profit of +1023 (thanks to the news yesterday that I earned a 400 with a single set of operations).
at this time are with a group of operations opened yesterday -500 to expect profit to go to close it.
so far I have not seen any open group go beyond -650 (for the time you see the monitor).
what I noticed is that there's always a stretch between profit and loss and I did nothing but wait for it to pull the side of profit.

iuri