UV22 not in Dither Slot

The manual is a little hard for me to follow. Page 182 mentions dithering, but does help with my problem. Which is this : I want to use UV22 HR in the Dither Slot on the Audio File screen. However, when I open the available options (by left clicking in the slot) I get Post Master, None and Internal. But no UV22 HR. I do in fact get the UV22 HR as an option in the Effects Slots under Legacy, but I would prefer to use the dither slot as I assume that is the best procedure.

Why can I not see the UV 22 and UV 22 HR in the Dither Pane?

Peter

Wavelab Essential 7 on pc vers. 7.1 build 543

Do this:
2011-07-18_17-59-02.png

Ah! Got it. Thanks.