Eliya's final response is the fleshed out example of what I'm suggesting to you: Re^3: trouble with evaluate

There are also a list of tutorials on perldoc for object oriented programming that might help you:

• perlboot - Beginner's Object-Oriented Tutorial
• perltoot - Tom's object-oriented tutorial for perl
• perltooc - Tom's OO Tutorial for Class Data in Perl

If you show us more of your code, we might be able to help you more fully