rotating a list of planes

Hey Everyone,

I'm having trouble rotating multiple planes and then outputting them as a list of rotated planes. Rotating just one set to item access works fine:

x.Rotate(y, New Vector3d(0, 0, 1))

a = x

But when I set the access type to list and try to rotate and output the first item in the list nothing seems to happen:

x(0).Rotate(y, New Vector3d(0, 0, 1))

a = x(0)

I've been searching the forums and it sounds like maybe I need to duplicate these planes before rotating them and then add them to a new list. I'm not sure how to duplicate them but here's me trying to add them to a list rather than output X directly:

Dim plnList As New list (Of plane)

For i As Integer = 0 To x.Count - 1
x(i).Rotate(y, New Vector3d(0, 0, 1))
plnList.add(x(i))
Next

a = plnList

But that didn't work either. I also saw that someone used transform(transform.rotation,,,) but that was to rotate a list of curves, and I'm not sure if that works for planes

Any help is appreciated

thanks,

Brian