Open the property pallete of the poplist and give initial value and required property=YES.
It will solve your problem.
I've already thought of that, but I don't want to set an initial value. Any other ideas?
You cannot put the empty element to the top
It doesn't bother me where the empty element is. I just want the focus to be on the top element when opening the list instead of the blank one on the bottom of the list.