Nested form

[JavierQQ]

Hi, 

I was trying this cast 
http://railscasts.com/episodes/197-nested-model-form-part-2

and it works but I have to do something else,

I have to do a sort of hospital application, and in the first form I have to put the child data then information about his parents and in the last part

I have to put the medicines that he needs. In order to do that I found this

http://railscasts.com/episodes/217-multistep-forms

but when I press the next button ... nothing appears.

Someone has tried multistep  with nested forms?

Thanks in advance