Magento get product collection via custom observer -


i have custom observer in magento 1.8.1.0 called on product view page when current product having upsell products. have verified (using mage::log()) observer working, when try following:

public function updateupsells(varien_event_observer $oobserver) {     $icurrentcategory = mage::registry('current_category')->getid();     $oupsellcollection = $oobserver->getcollection();     foreach ($oupsellcollection->getitems() $key => $oupsellproduct) {         $acategoriesids = $oupsellproduct->getcategoryids();         if (!in_array($icurrentcategory, $acategoriesids)) {             $oupsellcollection->removeitembykey($key);         }     } }

on echo $oupsellcollection; got nothing returned ?

is know how upsell products collection ? proper way ?

$upsellcollection = $_product->getupsellproductcollection();

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