I really like this pluggin, but I have a problem in the way to level up the custom parameters without using items, and I don't like too much the way parameters level up in the class curves pluggin, because i don't want to touch the normal paramaters curves. So, I would like to know if there is a method or a script in JS to only level up the customized parameters.

Hi!

Hm.... interesting question. It made me think to create a way on the Class Curve plugin to not mess with the default parameters. But don't know when I will be able to do that.

Well, alternativelly, what you can do is find a "level up common event" plugin. That everytime an actor levels up, a common event is played. 

So in that common event, you can raise the Custom Parameters the way you want with the plugin commands or script calls provided into the help file.

Ok, thanks for answering.

I started using the curve parameters plugin, and I started to understand it. So the thing that I wanted wasn't really necessary.
It's a good plugin.