in the manage category page I have cms block which I want to update it programatically 
I guess that the attribute id to set for this is ***landing_page***

unfortunatley I don't know the function to get the landing page or get the cms block value 

for example in this case **Category Listing**
how can I get that by collection?

    $category = Mage::getModel('catalog/category')->load(17048);

also

    echo $cat->getAttributeText('landing_page');
it doesn't show me anything

fortunately I did this!:

    echo $cat->getlanding_page();

![enter image description here][1]


  [1]: https://i.sstatic.net/OUe52.png

fortunately I solved part of the problem:

<?php include '/var/www/lenmar/mage_classes.php';?>
<?php $_helper = Mage::helper('catalog/category'); 
$cat = Mage::getModel('catalog/category')->load(17048);
$cat->setlanding_page('11');
$cat->save();
?>

so I can set it and show that but how I can get the value for that? I mean instead of Id I want to get Category Listing value