Using Exception Handler in an ADF Task Flow

Hi folks.
Today I gave a try on Exception Handling. while i go through the blog.
https://blogs.oracle.com/ADFProgrammers/entry/using_exception_handler_in_an
I cant able to attain the Solution 2: Re-Routing the task flow to display an error page As per the Figure 9 i make it out.
but it is not navigating error.jsff.
Taskflow return is not working i hope. only Exception thrown only happens from method.
anyone help me out. what I'm missing ?
- jdev 11.1.1.6.0

hi,
is there anyone help me out of this issue.

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    Hi,
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    <permission>
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    5. Login to self service console.
    6. Click on the custom link who's actionListener is pointing to bean which is launching the taskflow created in the above steps.
    7. On Click of the link a new tab gets open with blank page.
    Please help me in knowing the step which I am missing in order to solve this issue.
    Many thanks once again.

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