Hi
I have exactly the same problem. I have a reassign transition in my workflow and I need to define a new assignee. It works in general, but is not ergonomic for the user. I was thinking about adding a javascript to the process definition which would open a popup with selection of assignee upon each reassign, but Alfresco's javascript does not support methods like window.showModalDialog() or even prompt().
I am wondering if anybody has a solution. In any case it would be very handy to implement showModalDialog javascript method in future release if such anything does not exist yet.
Thank you
Jakub