Dynamic custom block problem

[rafaelpatro]

Hi guys

I'm trying to set a dynamic Add to Cart button without success.
I put my custom block in dynamic blocks and I declared the block inside product_list layout.
When in login sometimes my code appears and sometimes not. Dynamic config are not working for me.

In catalog/product/list.phtml I put this:

<?php
	echo $this->getChild('catalog.addtocart.logged')->setData(array(
		'add_url' => $this->getAddToCartUrl($_product),
		'compare_url' => $this->getAddToCompareUrl($_product),
		'code' => $code,
		'product' => $product,
		'iterated_product' => $_product
	))->toHtml();
?>

In my template catalog.addtocart.logged I put this:

<?php
$addUrl = $this->getAddUrl();
$compareUrl = $this->getCompareUrl();
$code = $this->getCode();
$product = $this->getProduct();
$_product = $this->getIteratedProduct();
?>
<?php if ($product): ?>
	<?php if(!Mage::getSingleton('customer/session')->isLoggedIn()): ?>
		<p><?php echo $this->__("To add to cart you must be logged in"); ?></p>
	<?php else: ?>
		<div class="actions">Here you see my code</div>
	<?php endif; ?>
<?php endif; ?>

What I'm doing wrong?

[rafaelpatro]

My template file above sometimes shows a null $product. This is weird because I'm setting data in parent block.

My layout catalog_category_default inside product_list block:

<block type="core/template" name="catalog.addtocart.logged" template="catalog/product/list/addtocart.phtml">
	<action method="unsetData"><key>cache_lifetime</key></action>
</block>