I would like to make a Minecraft minigame map where you can enter a code to get something. Here is how I would like it to work.
When you first join you get a written book inside it says:
Bla bla bla
Click "here" if you have a code.
Then if you click "here" it gives you a book and quill that says:
Enter code below:
Then they type a code, sign, close it and title it "code". Then takes it and gives them a reward or something.