help!

>s = MQSystem
>d = s.getDocument()
>o = d.object[d.currentObjectIndex]
>o.translation = s.newPoint(0,0,0)
>o.rotation = s.newAngle(0,180,0)
>m = o.rotation.getMatrix()
>for v in o.vertex:
>    n = m.mult3(v.getPos())




it rotates model SO far i need it to rotate center of the model WORLD  when i click Rotate it rotates fine in there x axisi 90.  and i cant cant get working to move object down :s
same as selecting Move and move it down. :S idk :S