title: Redirect a URL with parameter to another parameter url
body: <p><br>
  i'm searching for my redirect solution since last night.</p>
  
  <p>I'm using wordpress with the search&amp;filter plugin. But it uses for the results the wrong taxonomy tag. I can't overwrite the taxonomy...<br> Here comes my soultion for my problem. I want to redirect the wrong url with parameters to the right one.</p>
  
  <p>My old URL is: /category/familien?ortregion=aichach <br>
  My new URL should be: /category/familien?ort=aichach</p>
  
  <p>This is my .htaccess approach, but my problem is to rewrite the the specific parameter.</p>
  
  <pre><code>RewriteCond %{QUERY_STRING} ^ortregion=aichach$ [NC]
  RewriteRule ^/category/familien?ort=aichach$ %{REQUEST_URI}? [NC,L,R=301]
  </code></pre>
  
  <p>I hope you can help me. </p>