title: Updating an "external content type" field on an SPList using PowerShell
body: <p>I have a simple Document Library that links to an External Content Type (lookup) called "Events".
  Here's my PS script that loops through the list:</p>
  
  <pre><code>$spListItems = $spList.GetItems($spQuery)
  foreach ($item in $spListItems)
  {
        $item["Title"] = "New Title" 
        $item["Events"] ="Event Name"
        $item.Update()      
  } 
  </code></pre>
  
  <p>So...the "Title" column updates fine, but I can't figure out what I need to do to update the "Events" column correctly since it's an ext content type. Oddly this doesn't even raise an error, but the column is blank in edit mode. Any ideas on how to deal with this? 
  Thx.</p>