have you tried the posing slide and the clicking on eyes inside of the head slider..No, unfortunately it's a morps error, it's not that easy.
on another forum I was told that there is a way but very complicated, so that it is embarrassing to explain everything.
in practice the creator of the character made a mistake in setting some values when he "made him on daz". the only sensible way to solve the problem is to contact the creator.
i was hoping that someone able to think in an alternative way had another solution