how to include a new class into a project

Hello:

I’m working in a project about using Squeak to teach physics in College. I’ve made some new Morphs and created a new

 morphic project who contains them. After saving the project and publishing it into the Web, the plugin image does not recognizes

the new classes I’ve included. Have I done anything wrong or it is supposed to be like that?

PD.

I’ve been using squeak only for 3 months so sorry if this is a lame question (and sorry for my poor English too).

Thanx in advance