After days of intense work i found the solution, now i can add Babylon code to enable custom effects, ambient oclusion,etc... i mean, i can add any missing feature of the plugin placing inside the correct babylon plugin depending if is attached to a Camera, mesh or light.
Here a test using Depth of field, 3D chromatic aberration, edge blur, grain_blur,etc....
I tried lots of code from the babylon examples and seems to work. The bad thing is to achieve that i have to change the runtime.js of the plugin every time i want to change a value.
So, now is try to find a way to change that values using Execution_Javascript in the same way its used for change other babylon stuff. If not i guess that now that i know the structure, what code is needed and where to place, for a skilled SDK coder will be more easy do the work to pass/set values from C2 events/actions, will see.