The Expressions view helps you inspect data from a stack frame of a suspended thread. In contrast to the Variables view that shows variables in the current scope, the Expressions view can monitor the values of static and global variables and executed statements that you add to the view.
To open the Expressions view in the current perspective, click on the menu:
To open additional Expressions views, click 
(Open New View) on the toolbar above the view.
- Copy an expression (a variable name or a statement) from the file opened in the editor
area, click
in the grid, and
paste the expression to the new grid line. - Select an expression in the opened file, right-click and click Add Watch Expression on the context menu.
- Click
(Create a new watch expression) on the
toolbar above the view and enter an expression in the Add Watch
Expression dialog box.
When added to the Expressions view at debug time, expressions are displayed in the grid with their data types and actual values that are updated in real time. Click an expression in the grid to view more detailed information about it in the Detail pane below the grid.
When the debug session is terminated, the expression names remain until deleted manually. To
delete all expressions, click 
(Remove All Expressions) on the toolbar above the view.