How do I use Model in Helper - CakePHP 2.x

Question

I recently upgraded my app from cake 1.3.x to cake 2.x. Now I have a helper which uses model in some function. Initially syntax for loading model was (working for 1.3.x)

     App::import('Model', $modelName);
     $modelObject = &ClassRegistry::getObject($modelName);    
     $modelObject->find()

Now I changed it to following

    App::uses($modelName,'Model');
    $modelObject = &ClassRegistry::getObject($modelName);
    $modelObject->find()

Problem is, this conversion is not working. Can anybody tell me where am I doing wrong. Thanking in advance.

PS: Error message is:
Call to a member function find() on a non-object

Solution

working code should be

//let $modelName be User  
App::import("Model", "User");  
$model = new User();  
$model->find("list");  

I hope this will help some needy fellow