The Watch toggle button in the Debug toolbox opens or closes the Watch window. Individual variables and expressions can be watched for different conditions.
![Monitoring Variable Changes1](https://envisioncad.com/wp-content/uploads/2013/12/1.png)
To add a variable or expression to the watch list highlight the value in the code window. Right click on the mouse and select Add Watch from the pop-up menu.
The Add Watch dialog is displayed allowing for configuring the watch settings.
![2](https://envisioncad.com/wp-content/uploads/2013/12/2.png)
The expression is added to the watch window and is updated in real time as your program executes in debug mode.
![3](https://envisioncad.com/wp-content/uploads/2013/12/3.png)