Help with defaults in Terminal?

Hey, so just to experiment with what I learned online, I tried:

defaults write com.apple.iTunes show-genre-when-browsing FALSE

…and it worked. Genre was gone. But when I tried to undo it by doing the same and ending with TRUE, no dice. I even tried doing read on it to make sure it worked, and in the file it said true, but it still didn’t seem to. I also tried just doing

defaults delete com.apple.iTunes show-genre-when-browsing

…but nothing. The only way I could get genre back was to delete the preferences file all together.

What am I doing wrong?

 

Oh, ok thanks. What does the bool do? Sorry, I’m a noob at this stuff. Does it tell it it’s a boolean? Why is that not necessary for FALSE?