A variable on my form is unexpectedly changing during a call to a class function. I want to trace through the class function while watching the form variable but can’t directly reference it in a watch expression.

I can, however, reference a form control in a watch expression so I added a text box and timer control. The timer periodically writes the form variable to the text box where I can watch it as I trace through the class function. This seems to work but the form variable doesn’t appear to change until the code operation returns from the class function. Is there a better way of debugging this?