[TYPO3-project-formidable] Edit modalbox: It always execute all functions!

[Hauke Hain]

Hi,

based on this howto: 
http://formidable.typo3.ug/tutorials/editing-in-list-with-modalbox.html
All the functions in the PHP file are executed if I click on the edit button 
in the lister.

This is a big problem for me, because some functions change the database and 
this should only happen if the user clicks on the right button linked with 
the function.

Why does this happen?
And more important: How can I change this behaviour?

Regards,
Hauke