Help with geometry

Hi everybody

Im upgrading the geometry of the V0A detector for the ALICE experiment. My problem is the following: I want to generate a shape with 6 vertex in a plane and then extend this to produce a solid volume, somthing like TGeoArb8 does, but as you know, this allows a maximum of 4 vertex and I need 2 more, wich TGeo class shall I use? Can you send me an example of the class you recommend me?

Use TGeoXtru shape. See tutorials/geom/geodemo.C

Ok, thank you, I´ll check it