title: How filter GroupVariables by variable name in the Rest API
body: <p>Based on the <a href="https://docs.microsoft.com/en-us/rest/api/azure/devops/distributedtask/variablegroups/get%20variable%20groups?view=azure-devops-rest-5.0" rel="nofollow noreferrer">documentation</a> I can get a specific variable group using the below request </p>
  
  <pre><code>GET .../_apis/distributedtask/variablegroups?groupName={groupName}
  </code></pre>
  
  <p>This returns all the variables for a specific Variable Group.</p>
  
  <p>I'd like to get the details for a specific variable so I don't have to download all of them.
  e.g   </p>
  
  <pre><code>GET .../_apis/distributedtask/variablegroups?groupName={groupName}&amp;VariableName={MyName}
  </code></pre>
  
  <p>I've searched but I haven't found anything.</p>