How to do a proper back test

My EA uses H1 bars to scan for signals and M5 to do entry

So do I back test on H1 or M5?

When doing live EA run, I attach the EA to H1 or M5? 

Dua Yong Rew:

My EA uses H1 bars to scan for signals and M5 to do entry

So do I back test on H1 or M5?

When doing live EA run, I attach the EA to H1 or M5? 

It doesn't matter if your EA is properly coded.
Alain Verleyen:
It doesn't matter if your EA is properly coded.
Thanks. I carried out the test and makes no difference.