Ah I made it work.
Had to dig in the forum to find the answer.
For anyone else who want's to know:
To set a textbox or a list to have a custom font that's in your project files folder, you have to first add an empty text field to the layout that uses the "set webfont" action.
Then any other object like the list object can have that font by simply using the "set css" action to: "font-family" and value: "thefontname".
I'll write a tutorial on it too. :)