Export Niagara Data from multiple systems in same Blueprint

I’ve been able to have an interface in my blueprint to be called each time a Niagara System Export Date through its Export Date module.
Is it possible to do that with multiple Niagara systems at the same time?
I don’t know if I’m doing it right. I added 2 Niagara Object to self in BeginPlay like the snapshot here.


Then I’m using a Callback handler.
image
I’m no sure but I think both Niagara systems are mixed up together out of that handler.
How can I separate them to use them separatly? Or is it possible to have 2 different Handler ne for each handler?