Vinod,
Yes, I am making better progress with my own app button.
I think when my Handler has Operation "List" and "RemoveRow" as operation - that it disables my Delete button. WHen I remove this operation, my button is in activated mode.
So I did a modified version of Sunil's post.
1. I didn't do a BOOperation Read - not sure why that's needed.
2. I didn't put anything for the Cancel Handler - if the user says No to delete, I have no handler.
It seems to work now.
BTW, i meant to say I was referring to p95 of the 1311 Studio Guide (not the book). That example for the DeleteRow is not fully correct.