It is not about what the creator of the series has done with it, it is literally the fact that myself, and Vicier, as Gm's have declared this, and that not all of what we will be doing is derived from the series in which Camp Half-Blood rests. 

I have been doing this a very long time, and I can tell you all manner of things in mythology that are never commonly stated, but still hold true. Silver is referred to most often when fighting the reborn deceased under the control of Hades or another entity from Erebus. 

The mere fact that you insult me, and tell me that I disregarding the creator of Camp Half-Blood's series, is appalling. I am doing as myself and Vicier have always done. It is Camp Half-Blood, but with a more sense of what is true mythology. If you have a problem with our use of true mythology, then I am sorry you feel that way, but this is how it has always been, and how it will always be, so please for the sake of our patience stop trying to argue a moot point. 

The subject is not changing, the use of Silver against undead and spectral beings is not commonly known, but that makes it no less true and apparent in Mythology. End of that story.