Flash form with field add /remove function?!

Hey,
I have a question. I thought about a form in flash for a cooking site for example where the user can send their own receipes via an email form. So for example like this:

Name:
Email:
Ingredients (separate by comma):
Step 1:
Upload Image:

I am asking if it would be possible to have a liitle “+” sign or any other kind of add button behind the “step 1” field and by clicking on it the user can add a new field labeled “step 2” and so on… same with removing if he accidentially adds a field that is not required…

Would this be possible? How could give me some hints?

I have a flash form that gots a validation and image upload function, I only need to add the “add /remove” field function…