Problems to add Inclinations in Curtain Panel

I have watched some tutorial of revit here in Brazil, where the designers use a curtain wall as wood structure for roofs.
I tried to use the rotate command to add some inclination to the curtain wall but the curtain wall always come back to vertical position. Do you have any suggestion of how to fix it?

Hi Laureano, you need to use the control point that curtain walls have at one of their top edge corners to lean them. Check this out: Can I create sloped curtain walls? - VisualARQ