Pierre,
The CVIXML.fp is based on the Microsoft's XML ActiveX control version 2.0, that control does not support stylesheets. My recommendation is that you use the Create ActiveX controller in the tools menu to create an fp for the Microsoft's XML V4.0, this control includes support for Stylesheets.
Remember that since they are based on a different ActiveX control you can't mix function from the 2 FPs.
Hope this helps.
Regards,
Juan Carlos
