Using fields in fields

Hello,

I have a drawing with 100 points , each with another heigt. Actually it is a floorplan of a house.
I want near eacht point a text with the z-value. I already tried using fields but I can't get it worked with different UCS. It shows always the z-value of de WCS and not the UCS.
It is quite frustrating. In autocad, they can use a field in field, but it seems not possible in Bricscad.
Can someone help me to display the z value in the current UCS? Is it possible to display them is one single way without inserting a block point by point?
Thanks in advance, I would appreciate your help!

Regards, Geert