Hello, everyone. I have just updated a project of mine, and tried to upload it over the old file. When I play it, it still shows no differences from the old one, so I assume I might be doing something wrong. I've uploaded the first as a .zip file, just like I have been trying to do now. Is there something I am missing? Thanks in advance, and sorry for the most likely noobish question!

Have you clicked the "Restart" link at the top of your gamebook interface? Squiffy will still store values from your previous game, even if the book was updated.