Can't use "Write log file" node for performance logging

Hey,
I’m trying to use to Write Log File node in blueprint to get information about performance saved to a .csv file, but i’m having trouble with the target input.

In fact, I created a variable of Automation PerformAce helper type (the class name as a typo, btw!)
and create the BP in the asset explorer as well. When I want to link the asset to the var, it’s not possible. How come?

Is there any way I can get this node to work, or is there any other way to print perf stats to a readable text file?

Thanks!

Nevermind I guess, this is what I need