I'm having problem with my game because the Multi Frame Script changes
the animation file name, like hero [8]. I've tryed all kinds of Multi
frame scripts, all scripts needs a change in the image name to specify
the number of frames on it. So I wanted to make a request here for
someone to create a very different kind of auto frame script. Maybe it
would be possible to create a script where the number of frames of
animation would be inserted into it? Like this for sample:

Files inside the "Characters" folder:

name of .png file => number of frames

hero => 8
hero_ACT => 7
hero_HIT => 6
hero_SWD_01 => 6

Note: It's a script for RPG Maker XP.

Thus
the file name does not change, and the script will do the organization
of animation frames by file names .png written on it. Someone could
create something like that?

It's possible, sure. Link the script you want to use, and someone might change it for you (I will probably do it, but I don't want to commit to anything as I am busy getting ready for the semester to start)