I'll make an update it, and now able to enchant equipment with this spell (Leaving her infinite when their equipment is being used. Is not a spell that does damage, it is a spell that improves an attribute).
I got everything right and make a necklace with this spell, the effect worked perfectly and everything went right... I got disenchanted him to put the effect on other equipment, but could not put anywhere else.. I tried on the necklace, ring, helmet... none worked. He said he could not put this enchantment on this equipment.
I wonder how I can do it just to be enchanted on items of jewelry such as ring and necklace... only them, without putting on armor, helmet and boots. How can I make this restriction? Thank you!