title: Imacros - Extract and select multiple items from selector via predefined variable
body: <p>I'm trying to EXTRACT some content from a table to be used for selecting items on a select multiple box.</p>
  
  <p>This works fine:</p>
  
  <pre><code>VERSION BUILD=9030808 RECORDER=FX
  TAB T=1
  URL GOTO=https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_select_multiple
  FRAME NAME="iframeResult"
  TAG POS=1 TYPE=SELECT FORM=ACTION:/action_page.php ATTR=NAME:cars CONTENT=%volvo:%opel
  </code></pre>
  
  <p>How come that when creating the extract content as a variable, then it does not work:</p>
  
  <p>The variable called <code>SET CARS volvo:%opel</code></p>
  
  <pre><code>VERSION BUILD=9030808 RECORDER=FX
  TAB T=1
  URL GOTO=https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_select_multiple
  FRAME NAME="iframeResult"
  SET CARS volvo:%opel
  TAG POS=1 TYPE=SELECT FORM=ACTION:/action_page.php ATTR=NAME:cars CONTENT=%{{CARS}}
  </code></pre>
  
  <p>Error message:</p>
  
  <p><code>Entry [volvo:%opel] not available [Box has 4 entries], line: 6 (Error code: -924)</code></p>