Problem while editing the Porject configuration source.

Hi All,
Recently I have referred to "https://jazz.net/wiki/bin/view/Main/AttributeValueProviders" . The link basically provides the additional attributes that can be customized to work items presentations.

There is also some code provided in the link, but when I am trying to use the code by pasting it in my Project Configuration source in RTC eclipse client it is giving some error saying " Invalid content was found starting with element 'configuration-data'" . Below is the code which I tried to use. It doesn't show in correct format, kindly request you to refer to the above link in case you like to see the code.

<configuration>
<valueSetProviders>
<valueSetProvider>

</valueSetProvider>
...
</valueSetProviders>


<valueProviders>
<valueProvider>

</valueProvider>
...
</valueProviders>
</configuration>


Could anyone please help in using this code?

Thanks a lot in advance.