>>You can try to do .checkbox.refresh() in the column.container.refresh(), see if that fires.
>
>I tried. For some reason even the container's refresh() does not fire. I put messagebox() there but nothing happens.

Hmmm... maybe it doesn't, on a readonly grid?

Most of the time I have to fight off the grids that refresh when I don't want them to and disturb my debugger... and now you have one which won't refresh.