VST MultiPanner Depth and Height Locked

When I use VST MultiPanner I found the Depth and Height knob are Locked.
Changing output format can’t make effect.
In cubase and nuendo are the same:. :><::
Please Help Me.

What is the input format?
Normally, it will affect what is available. If the input bus configuration has no height channels, there could be no height information to scale.