ADF/SOA custom worklist viewFilter

I have managed to create a ADF application with a custom worklist region following instructions of :
Developer's Guide for Oracle SOA Suite &30.13 Creating Reusable Worklist Regions

It was not easy since
• WSRP Container is missing in latest jdeveloper 11.1.1.3
• when I deployed nothing was shown and no error in the logs.

I found out that WSRP Container seems not to be needed and that it was authorization issue.
Since the application must have security enabled, you need to give access also to task flows that comes from libraries:


Then the task list is visible and task details shows as dialog.


Yet we need to show to the user a custom view that contains Flex Fields with business logic values.
I see that there is a parameter you can pass to the worklist task flow the viewFilter:
Developer's Guide for Oracle SOA Suite &34.4 Passing Worklist Portlet Parameters
'viewFilter Specifies the selected view for which the tasks are displayed.'

Yet when I use it with values like:
value="Due Soon"
value="My Work Queues/Standard Views/Due Soon"
I get the following error:



Is this a bug or i need diferent format of value in order to filter specific task view?

I also noticed that from view menu all views shows 2 times apart from Inbox:


Is this also a bug?

Test case:
http://adfbugs.googlecode.com/files/TestCustomWorklist.zip