Problem with Settings app

I'm learning to write a settings application in iPhone. I add items and subnodes to those items in the root property list. When I open Settings I can see my app setting there but not all the items are reflected to the settings. I can get a text field with title Username.But I can't get a textfield for password, all I get is a textfield, it's not secure, so anything I write in that field is not displayed as stars.Here's whar I write:

items2      dictionary
  type      string     PSTextFieldSpecifier
  isSecure  Boolean    YES
  title     string     Password
  key       string     pas开发者_Python百科sword

And I can't see anything else I've saved in the plist. I compare the plist in the study book I follow and the one I have They're exactly the same. If I Build and Run the project provided by the book, it's ok, all the settings are there. Is there a special consideration with Settings App?

Here's the link to the plist

Shouldn't isSecure be YES?