how do the "fixed enhancement scrolls" work?

those new enhancement scrolls that supposedly give fixed enhancement stats to your item, anyone has any idea how they work yet? i'm mainly asking because i want to know this:

i have a mask with no str, dex, int nor luk, if i used one of those enhancements, would it get these stats at all, or do the stats need to be present already for them to be increased? or does it follow some other random rule?

thanks