title: Magento set the new attribute value
body: <p>I have created a new IMEI attribute of type textarea for all products, see from the image. Can anyone point out a function to update the its value. I have the code like the following.</p>
  
  <p>$this belogns to Mage_Sales_Model_Order.</p>
  
  <pre><code>    foreach ($this-&gt;getAllItems() as $item) {
  
                   $item-&gt;setImei('123');
  
               $item-&gt;save();
               echo $item-&gt;getImei();
      }
  </code></pre>
  
  <p>I am getting 123 from the last statement but when I am viewing from admin. Its not changing there. Also in which table the attribute and value will be stored, So I can debug from there.</p>
  
  <p><img src="https://i.stack.imgur.com/gF7Md.jpg" alt="enter image description here"></p>