Hi.
I configured a task form using a custom task result column with only choice "document read". Task is validated "Document read button" is clicked.
I also configured a validation formula; the task has a "read date" column, the formula controls date is in the past.
If the validation formula fails because of the date... the warning is displayed but sharepoint updated the screen, transforming the button into a classical column. So I cannot validate the screen; the only solution is to reload the screen.
Anyone ? :-)