html link not changing stuck on first result

I have routers configured to have pretty urls 

html link not changing stuck on first result 

the below code works and does what I want, but I am trying to use cakes way of generating links

<td><a href="/<?php echo $examples['somemodel']['slug'];?>"><?php echo $examples['somemodel'][slug'];?> </a></td>

when I do this the url name is different

but the hyper link doesn't change

<?php echo 

$this->Html->link($examples['model']['somename'], '/controllername/slug/' + $examples['model']['slug']);

?>

my results are 

<a href ="/example1">example1 </a> 

<a href ="/example1 ">example2 </a> 

<a href ="/example1 ">example3 </a> 

<a href ="/example1">example4 </a> 

instead of what I want it to do

<a href ="/example1">example1 </a> 

<a href ="/example2">example2 </a> 

<a href ="/example3">example3 </a> 

as you can see the url name is different

but the hyper link doesn't change

//router.php

Router::connect(

    "/example/:slug",

    array('controller' => 'differentname', 'action' => 'view'),

           array( 

   

'name'=>'[-A-Z0-9]+', 

               'pass' => array('slug')

  

     ) 

);

Router::connectNamed(

    array('/example/' => array('action' => 'view', 'controller' => 'different')),

    array('default' => true, 'greedy' => true)

);

//'view.ctp

<?php

foreach ($example as $examples): ?>

<?php echo 

$this->Html->link($examples['model']['somename'], '/controllername/slug/' + $examples['model']['slug']);

?>

results 

<a href ="/example1">example1 </a> 

<a href ="/example1 ">example2 </a> 

<a href ="/example1 ">example3 </a> 

<a href ="/example1">example4 </a> 

instead of 

<a href ="/example1">example1 </a> 

<a href ="/example2">example2 </a> 

<a href ="/example3">example3 </a> 

What am I missing or not getting here 

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