How to set namespace for xml datasources?

hi, i'm tryng your amazing work...it's very fine! i would like to use ActiveWidgets grid as presentation layer for xReporter data (xml response via http)..i've tried to use xml-datasource, but when i specify the root-element (that have a prefix xmlns:xr) i've this error : "reference to undeclared prefix namespace xr:"...there's some attribute of the grid that i can set to specify the xml-namspece?

thanks in advance...
giovanni

data.setNamespace("xr", "http://your/namespace/url");

You can look at the file "xml - xignite - quotes" file in the examples directory.

tahks so much