I did, in all thinkable variations, because it would be so useful.

Unfortunately this seems to be one more of Poser's "internal" functions which can't be controlled from the outside.

Time to change that!! You hear me, RENDO?

Until that happens (maybe in Poser 2525?), your best bet is to use the scaling dial instead. Since the current Poser can actually scale down any object 0,000 %, there would only remain a minute dot of it (which you can then move completely out of sight with the yTran dial if needed)

Addendum:

I don't know what you exactly want to achieve. But if you want to make it "slowly" become in/visible: The visibility dial works boolean, so either ON or OFF. No values in between... You could try to animate the "transparency" nodes in the MAT room . Don't forget to include the "specular" value or you'll get ghost speculars...

HTH

K