Plan Set - Plan and Profile - Segment Slope

I might be missing something but I am not seeing and easy way to label the slope of a profile segment at the middle of a segment. I am having issues trying to label the slope of a segment that just has a point of beginning and vertical break for the end.

Does this help

The line you want to label has to be a Reference Line in the corridor or one of the corridor surfaces - Design is the FInish Grade of the Corridor

Exactly what I needed. Thank you

I forgot to change the surface to design and kept getting the compaction tags.