Can templates add modifiers to traits in GCA5?

[Sergen]

I'm using the latest GCA5 and I'm trying to create the Lytherion template and lenses from the GURPS Creatures of the Night Vol. 1.

The Lytherion template has Mana Enhancer 1 advantage.
(Mana Enhancer 1 (Area Effect, 256 yards, +450%; Nuisance Effect, Causes strange events, brings out latent abilities in strangers, and interacts poorly with other lytherion auras, -15%; Onset, 1 day, -30%) [253].)

The Toxin-Fueled Aura lense adds Switchable modifier with limitations to the Mana Enhancer advantage.
(Add Switchable (Limited by Minimum Duration, One Day; Requires Will Roll; Trigger, Exotic poisons), +45%, to Mana Enhancer [22].)

So, is it possible for templates to add modifiers to traits in GCA5?
I think this was impossible in GCA4.


Any help would be appreciated!
= Sergen =