title: How to deal with presence of variables in message bundles ( localization )
body: <p>it's the first time I'm developing an app that needs to be localized into more than 20 languages. The problem is that there is a lot of messages that contain a variable. It can't be hardcoded because if it changed, the administrator would have to change it in 20+ property files.</p>
  
  <p>Are there any known possibilities how to deal with it ? I'm currently using spring framework.</p>