How do we do the union for the palindrome project? I found a document that says we can say setx | sety is the union, however, when I implement this, it doesn't work. Is there a better way to do it, or rather a way that works? Or is my logic off and that's why I can't get it working? (For part 4) Thanks for any and all help.

The tutorial is much easier to read than the API and probably all we will need