It works. My confuse was how does the plugin know which actor to apply the face change to. I had to choose the face file of the intended character and face index is a different face within the face file. I was confused my bad. I just need to make separate fimg/face files for each character to avoid overlapping characters who share a face file. (Or at least I think my summary explains it.)
Thanks for the help.
I have one last question. If the player has multiple ailments/states inflicted on them, is there a way to make it cycle through face images or is it just stuck to the initial or primary ailment/state face image.