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copied!<p>Magento reads its configuration values at runtime directly from the configuration object's tree structure, so you need to use the configuration object's native <code>setNode</code> method to change the values. However, because of the way Magento <a href="http://alanstorm.com/category/magento#magento_config" rel="nofollow noreferrer">loads in scoped configuration</a> (self link), it's not as straight forward as it seems. </p> <p>With current versions of Magento (and I believe, but have not tested, with older versions), you'll need to set the configuration value in the set of nodes for the current <code>store</code>. </p> <p>Step one is getting the code for the currently set store. You can do this programmatically with the following</p> <pre><code>$store = Mage::app()->getStore(); $code = $store->getCode(); </code></pre> <p>then, you can set a configuration value with the following call</p> <pre><code>$config = Mage::getConfig(); $config->setNode("stores/$code/web/unsecure/base_skin_url", 'value_to_set'); </code></pre> <p>Keep in mind this all needs to happen <strong>after</strong> Magento has bootstrapped the configuration object. Also keep in mind there's a period of time where Magento will have a loaded configuration, but the store object will not be loaded. If this is the case you will not be able to load the store code from the store object.</p> <p>I did something similar in my <a href="http://alanstorm.com/magento_flat_collection_chaos" rel="nofollow noreferrer">Pulse Storm Chaos module</a>. If you're interested in working code it's on <a href="https://github.com/astorm/Pulsestorm/blob/master/app/code/community/Pulsestorm/Chaos/Model/Entropy.php" rel="nofollow noreferrer">Github</a>.</p>

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