The "Set Focus" Trigger and Lightboxes

Good day to our experts! And thank you in advance for your help. This may be a JAWS issue, but I don't know.

Currently, I have the triggers set up per the following, but JAWS is not focusing on BUTTON 2 once the lightbox closes. 

Is this the correct setup? Is there a better, smarter way to make this work with JAWS.

When the user clicks BUTTON 1

- Set focus on BUTTON 2

- Lightbox 1.0

Thank you!