How to Change Animation with a Skill ?

How Do I change an animation using a skill?

What I want to do is that I want my battler to use a skill that changes the regular Attack Animation.

Lets say My batter uses [Fire Weapon] (adds Fire attribute to regular Attack) When I choose to Attack an enemy I want the regular attack animation to change to [002: Hit Fire] in the Animation Database.

Now How Do I Do that ? I have a done a few methods but they don't seem to work and I'm sorta stumped :( I also can't find a script that allows me to do that.

I assume you've done the obvious and put an animation of your choice onto whatever the skill is which adds Fire attribute.  If that's not coming up, then perhaps a screen shot of that skill page would help us to see what's happening.