GU, EU, UJ and UC same system?

Hi
I’m optimizing one system (EA) for a friend, that trades simultaneous on GBPUSD, EURUSD, USDJPY and USDCHF, open trades and close trades on one pair are influenced and depend on behaviour of other pairs, is anybody out there that have experience and trade in similar system?
For now it looks promising, can somebody share experiences?
Please constructive opinions, on favour or against.

Hi
L

hi there,

if you provide more information such as how the ea trades that corresponds with the other pairs and what is the rationale behind those trades then this tread would be much more interesting, don't you think so?

Hi
Thk for your post J
Here goes a “picture” any comments/questions?
Green arrow - Long Signal
Red arrow - Short Signal
Blue arrow - Keep trades