### Message Flow Properties - Variables

In the Message Flow Editor, click a node or an action to display its properties in the Properties view. For many nodes and actions, one of the properties pages displayed (as a tab) is the Variables page. Use this page to see a list of all the predefined and user-defined context variables. Click Add to define a new variable.

For more information about context variables, see Message Context in the AquaLogic Service Bus User Guide.