Invoking Do it in a Debugger raises an error

[npapagna]

Describe the bug Do it cannot be used in a Debugger, an error is raised.

Steps to reproduce

1. Open a Workspace with a := 1.
2. Right-click on the Workspace -> Debug
3. Invoke Do it on a := 1.
4. Notice the following error is raised: Error: 'subscript is out of bounds: 1'

Expected behavior I was expecting to be able to use Do it in the Debugger.

Screen captures

Additional context Do it works just fine in a Workspace, the error is raised when trying to invoke it in a Debugger.