title: How to concatenate strings in getting value from resource bundle in Jasper Report?
body: <p>I want to get task names from resource bundle in my report. I try to concatenate prefix and task name but it gives syntax error. It gives same error even I remove the prefix. </p>
  
  <p>These don't work.</p>
  
  <pre><code>$R{task.name.$F{task_name}}
  $R{"task.name."+$F{task_name}}
  $R{$F{task_name}}
  </code></pre>
  
  <p>These work</p>
  
  <pre><code> $R{task.name.utilLoad}
   $F{task_name}
  </code></pre>
  
  <p>I have a lot of task and the task names come from queries.I need to use loops and queries. What should I do?</p>