title: imacros invalid property id
body: <p>Hi Im trying to loop through a csv and store each line in a JavaScript variable.</p>
  
  <pre><code> var y = {{!COL1}};
  </code></pre>
  
  <p>What is the proper approach considering</p>
  
  <pre><code> macro += "SET !DATASOURCE C:\\imacros\\demo.csv" + "\n";
   macro += "SET !DATASOURCE_COLUMNS 1" + "\n";
   macro += "SET !DATASOURCE_LINE {{i}}" + "\n";
  </code></pre>