the both Python scripts are perfect working. The LinkBlock makes the tool complete, both added to my personal toolbar.
The RVB doesn't work, the block stays linked and the file wan't be embed. It's no problem, since the both Python scripts are working. The advantage of RVB scripts is that the source code can be direct saved to the button, good for switching the toolbar to a new computer or new Rhino installation.
Thank you very much,