Marvel Ultimate Alliance Gba Gameshark How Do You Do Your Extreme Attack In Marvel Ultimate Alliance?

How do you do your extreme attack in Marvel Ultimate Alliance? - marvel ultimate alliance gba gameshark

I can not believe how you use your big attack on Marvel Ultimate Alliance. Also check the manual says press Z, and select Change and I have already tried. If you're wondering, I use the torch to the man who was level 10 and his attack is extreme Fantastic Fire. If anyone can help me?