Virtual column changes without explanation

[tvinci]

Hello AppSheet Community

I have this virtual column that is very important for the functionality of the app. I added an actual column to the table titled “Print?” that switches to true at the press of a button. Once the value is switched to true, I receive an email. So I’m happy with how the button works, EXCEPT for the fact that when I press the button, the virtual column stops working and becomes blank. This significantly impedes the end user experience. How do I stop this from happening?

Thank you!
Tiffany