Arguments

tinEname  (ename or vla-object)  the TinSurface entity to assign the name
elevation  (number)  sets a fixed Z elevation for the entire TinSurface (all points get the same Z value)

Return

T or NIL

Example

(tin:setsurfaceelevation tin -20.0)  T
all points used by the TinSurface are set to a Z value of -20.0

Remarks