Did you guys find a better way to do this?

yes that was the problem, thanks for the pointers!

Cool, Thanks! so my expression got corrected, and when I “Test” it does show up. But on the APP Preview UI, this column doesnt get listed there, all others makes it into the UI.

For eg:

I added a new Virtual Column “Lead” like below - When I re-sync the App, and go through the default views there for my data set, I dont see Lead listed there, I see all the other columns in the App View.