Module does not work for trivial paths

I wanted it to make pages matching this path: user/*/scheduler use the admin theme.

However, when I put that string in the textfield below "Use administration theme for the following pages:", nothing happened. Clearing all caches had no effect.

For those who need this and can't get Administration theme to work, I'll just say that I ended up solving my problem with a small custom module using hook_custom_theme. Here is the full code of my implementation of this hook. You put it in a custom module.

/**
 * Implements hook_custom_theme().
 */
function MYMODULE_custom_theme() {
  $cp = current_path();
  if (fnmatch('user/*/scheduler', $cp)) {
    return variable_get('admin_theme');
  }
}