title: How to replace "()" from extracted text with some other character in Imacros
body: <p>I want to extract image name and then use the name to save the image
  here is the js code that i use</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>macro += "TAG POS=1 TYPE=SPAN ATTR=ID:txt2ArtikelNr EXTRACT=TXT" + "\n";
  ...
  ...
  ..
  macro += "ONDOWNLOAD FOLDER=* FILE={{!EXTRACT}}.jpg WAIT=YES" + "\n";</code></pre>
  </div>
  </div>
  </p>
  
  <p>It works fine until there are brackets () in the image name. In this case it does not download the image.</p>
  
  <p>e.g. If image name A123, it works fine.</p>
  
  <pre><code> If image name A (123), it does not download image
    and gives me this error wrong format of SET command, line 4 (Error code: 910)
  </code></pre>
  
  <p>Thanks in advance</p>
  
  <p>I am using  firefox 38.0.5, and imacros addon 8.9.2.1</p>