Vertical slew from reference regression line

Hi.

I have a model with regression lines that I reference in to my design model file. I can use regression lines from the reference to use the tool Calculate horizontal slew and see the slew in design model but I cant´t use it for Calculate vertical slew.
My regression lines in the regression model are created from survey points.

How can I validate or see the vertical slew in my design model?

How can I do horizontal and vertical regression reports with one design model and one regression line model?

Kind regards 

Patrik Hadin Sweco