title: How to set and use session variables in pentaho CDE?
body: <p>I'm trying to use session variables in CDE. I use Startup Rule Engine to set the variables (althought I'm not sure if it really works, since I haven't been able to access these variables yet). I want to use these variables on the preExecution of a component in CDE. I have tried with ${[session:region]} (region is the name of the variable) but I only get the text itself (if I use console.log). I have also set a simple parameter (name:region value:${[session:region]}) but I get the same.</p>
  
  <p>What's the way of doing this?</p>