title: Replace values of string before displaying it
body: <p>I have a string like this:</p>
  
  <pre><code>-Backcheck = 0 Days 2 Hours 15 Minutes\n-Backcheck = 0 Days 1 Hours 13 Minutes
  </code></pre>
  
  <p>before display it I want to change \n for \n Median and remove -Backcheck for nothig so I do: </p>
  
  <pre><code>tt.BackcheckToCorrectionsString.Replace("\n", "\n Median ");
  tt.BackcheckToCorrectionsString.Replace("-Backcheck", "");
     //Display
    e.Text = $"Mean {tt.BackcheckToCorrectionsString}";
  </code></pre>
  
  <p>But it just return same value, what am I doing wrong? Regards</p>