I have product attribute "is_stock_update_custom". I need to update this attribute programmatically from CartController.php
I have tried so Far
$product = Mage::getModel("catalog/product")->load($params['product']);
$attributeCode = "is_stock_update_custom";
$value = "Yes";
$product->setData($attributeCode, $value);
$product->save();
In this neither "yes" nor "1" was worked. Please help.