[MX SS3] Annotation of an associated string in profile

Hello,

I need to annotate an associated string (ditch) in profile view with its level and chainage of reference string (annotation along a string - not in box).
I've tried 059, but it's annotating a cumulative length of an associated string that differs from reference chainage (screenshot below)

Does anyone know any solution for such task (of course in linemode)?

Best regards
Aleksander Zamorski