Users are not removed from role using UME API

Question

Hello,
I am using this code to remove users from a batch of roles that I have.
Everything is running OK, no exception is thrown and at the System.out I see all the actions that needs to be taken correctly. The problem is that if I'll go later to one of the roles the users are still assigned to it. Any idea what I'm doing wrong here?
try
IRoleFactory roles = UMFactory.getRoleFactory();
IUserFactory users = UMFactory.getUserFactory();
IRoleSearchFilter filter = roles.getRoleSearchFilter();
filter.setUniqueName("<My_filter>", ISearchAttribute.LIKE_OPERATOR, false);
ISearchResult sresult = roles.searchRoles(filter);
if ( sresult.getState() == ISearchResult.SEARCH_RESULT_OK )
     while(sresult.hasNext())
     String id = (String)sresult.next();
     IRole role = UMFactory.getRoleFactory().getMutableRole(id);
     Iterator i = role.getUserMembers(false);
     while (i.hasNext())
                     String uid = (String)i.next();
          IUser user = users.getUser(uid);
          role.removeUserMember(user.getUniqueName());
          System.out.println("Removed user: " + user.getUniqueName() + " from role: " + role.getDisplayName());
     role.save();
     role.commit();
catch (Exception e)
     manager.reportException(new WDNonFatalException(e), false);

Answer 1

Solved it!
It needs the FQDN User ID...