help to Configure a Data Management Service destination

Hi, I have a problem with the sample here :http://livedocs.adobe.com/flex/2/docs/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDo cs_Parts&file=00000138.html

with flex builder I have the following error : Destination 'notes' must specify at least one channel.

somebody can tell me what I need to do to resolve my problem ?

thanks

Frederic Cantenot