I have the same question: how to determine which submit button a user clicks. The form had multiple buttons instead a list. So I assume that the AWS_ACTION doesn't work for me. How about AWS_CHOICE and AWS_status? My workbench version is 8.1.1.3.I tested with AWS_CHOICE, it returns NULL when clicking one of buttons.Is AWS_ACTION works for my version?Any Adobe workbench library(API) doucments availabel online? Any form and process samples available somewhere?Thanks and best regards,