yiic help <command> not working if command not in default path

Hi

I have some modules with commands. The Commands are registered in console.php:


'commandMap'=>array(

  'backupTree'=>array(

  'class'=>'application.modules.moduleName.commands.BackupTreeCommand',

  )

).

When I try to call


./yiic help backuptree

yiic only lists all the available commands.

When I move the Command to the default path ([font="Courier New"]protected/commands[/font]/) the help is displayed as expected.

What is wrong here?