Attributes and Parameters

[SaijinGohan]

Ok I was bored today so I figured I would try something new. I redid the walk gani to include Attribute #P2 as light2.png. That shows in the gani and all that on graal, so what I am asking isn't because I didnt do the gscript and the gani to get the attribute to show. Anyways...

So now I walk on my server and the little light2.png is behind me. How do I make that glow like a light effect. I know the obvious is editing the gani in NOTEPAD and adding ganiscript, but thats dumb I think. How can I do this from gscript itself, like in a weapon. Is it even possible? If not perhaps we need
getattribute(#P2) or something like that. Since the image can already be set, why not actually make it an editable npc like that.

Now for part2. I understand attributes and how they work and that theres 1-30 and then the head and body stuff. But what about parameters? What do they do, how can I set them, do they work like attributes?