The current version of JMP debugger is not user-friendly especially to step through code. In order to be able to visualize the values of code before a breakpoint, the user is required to add the variables of interest to a watch window. This is extremely painful, inefficient and old.
Provided below are samples from other tools, where debugging is much more easier and user friendly.
Matlab - Debugger
![](https://www.mathworks.com/help/matlab/matlab_prog/debugging_evaluate_selection.png)
Visual Studio
![Moving the Pointer](https://docs.microsoft.com/en-us/visualstudio/debugger/media/dbg_basics_example3.gif?view=vs-2017)
Best
Uday