There are issues when FSB translates code to MT5.
On my experience I found some EA's that work in tandem MT4 - MT5 , but in most cases there are a lot of divergences.
So, since I have not been able to find a reliable translation I only use MT4 EA's
There several issues reported on the forum which you can follow an learn from it.
There are users exclusively of MT5 , sincerely I do not know how they are doing it since all the flaws I found tell me just to stay any form using any EA on MT5.
If you find any break trough please report . I have not been able to find any success in more that 500 experiments so far , so I quit . May be I doing something wrong .