title: Regex to append a variable to URLs
body: <p>I have a regex right now on a WordPress site using Redirection plugin:</p>
  
  <p>Source URL:
  <code>^/video/(.+)</code></p>
  
  <p>Target URL:
  <code>/video/$1</code></p>
  
  <p>And that's working fine. Now, I need to add <code>?filter=views</code> to the end of the <em>Target URL</em>, but I can't seem to find a way to do it.</p>
  
  <p><strong>Desired redirection would be:</strong></p>
  
  <p><code>site.com/video/video-category-name</code> to <code>site.com/video/video-category-name?filter=views</code></p>
  
  <p>Adding <code>/video/$1?filter=views</code> as Target URL adds multiple <code>?filter=views</code> when I just need the variable added once.</p>
  
  <p>Any one that can help me out? Thanks!</p>