You can define Page Variables for a
Page.
Page Variables are variables that you can use only within the context of the
Page itself. For example, you can use a
Page Variable to perform a calculation on the values of
Message Part elements. You could also use a
Page Variable to do a database query or invoke a web service.
You cannot use Page Variables in the
Actions invoked from the
Page. If you want to access data in an
Action, then you must include that data in the
Page Message. In particular, you cannot use
Page Variables to implement scrollable data sets.