Multi-value attribute

Hi everyone,

I want to know if the workflow can traite the multi-value attribute.

For example, I'd like to modify the "group membership" for the user. At UA
interface I can do it. It shows all the group at the menu and I can searche
the groups and add them to user. But at the approval page, even I use the
same DAL Entity, I can't do it, it shows only one value and when I click
the search button it shows at the window there's an error of ParamListPortlet.

Another question : how to make the display order at the Editer page ?
Because we can make the order for displaying the attributes of user but
when we get in the Editer page, the display order is horrible !

Thanks !