AutoCAD Civil 3D :: Profile / Alignment Label Expression

Nov 26, 2012

Here is my expression:

IF((FMOD({Raw Station}+5,15))!=0,-1,({Profile Elevation}-100*FLOOR({Profile Elevation}/100)))

I have also tried it without a pair of brackets:

IF((FMOD({Raw Station}+5,15))!=0,-1,{Profile Elevation}-100*FLOOR({Profile Elevation}/100))

and I have tried it using {Station Value} instead of {Raw Station}

Here's what it's meant to do (because it's a long one):

If the station value + 5 is not divisible by 15, return -1
If the station value + 5 is divisible by 15, return the profile elevation, 
if the profile elevation is in the 100 range, subtract 100
if the profile elevation is in the 200 range, subtract 200...etc 

Here is my conundrum: If I use the expression in a profile label, it works fine.  But if I use it in an alignment label as reference text, it returns -1 for every value.

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