title: Google DFP SetTargeting resulting in blank ads
body: <p>When I add a "Set Targeting" code to the end of an ad line on the website, the ads are going blank. Note that these ads have been running just fine before I added the targeting code.</p>
  
  <p>Here's what my code looks like before the set targeting code:</p>
  
  <pre><code>googletag.defineSlot('/XXXXXXXX/My_Desktop_Header', [[970, 250], [970, 66], [728, 90], [970, 90]], 'div-gpt-ad-XXXXXXXXXXXXXXX-4').addService(googletag.pubads());
  </code></pre>
  
  <p>Here's what my code looks like with the set targeting code:</p>
  
  <pre><code>googletag.defineSlot('/XXXXXXXX/My_Desktop_Header', [[970, 250], [970, 66], [728, 90], [970, 90]], 'div-gpt-ad-XXXXXXXXXXXXXXX-4').addService(googletag.pubads()).setTargeting("group","ten").setTargeting("author","john");
  </code></pre>
  
  <p>If I remove the setTargeting portion, the ads come back immediately.</p>
  
  <p>Also worth noting that I added the key-value pairs in the Inventory section of DFP - group/ten and author/john</p>