how to save a text entry in a slide and rescue in another scene?

Hi Everybody,

I'm building a course and i need the students to enter a text in a scene and rescue in another scene, close to final. I've been trying in various ways, but I have not succeeded.  I would also like that if you leave the session, when you return you can retrieve your text.

It is possible?

Thanks in advance.

Sorry for my english.