This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Your main problem there is that you're trying to add instructions directly to a class, rather than them being in a method. The declarations would work (but probably aren't what you intended - there's no reason for id1-id5 to be member variables). But the add lines have to be in a method (or at least an initialisation block).