Java Custom Action API - How to add JVM Parameters to a Custom Action?

I've created a Custom Action, and I was able to add it to NeoLoad with no problems.
The issue I'm having is that for my code to work properly, I need to add a JVM argument to my program.
How can I add an argument? I can make it work through Eclipse, however, as NeoLoad is the one calling my Custom Action, I can't find a place to add the JVM arguments.