title: Concat variable inside string in powershell
body: <p>I am trying to concat variable in the string.</p>
  
  <p><strong>Code</strong> :</p>
  
  <pre><code>$uniqueID = "123"
  $Key = '&lt;add key="uniqueID" value="$uniqueID" /&gt;'
  write-host $Key
  </code></pre>
  
  <p><strong>Result i want</strong> : </p>
  
  <pre><code>&lt;add key="uniqueID" value="123" /&gt;
  </code></pre>
  
  <p><strong>Result i am getting</strong> :</p>
  
  <pre><code>&lt;add key="uniqueID" value="$uniqueID" /&gt;
  </code></pre>