Given the following declared Macros and Parameters:

[Macros]
dp=n/p
db=dp*cos(a)
do=(n+2)/p
dr=(n-2.5)/p
la=(pi/180)*(db/2)
rf=.300/p
h=d/2/tan(a/2)
ang=dia*180/rad
sb=4*4
theta=dia*180/rad

[Params]
a=82.0000000000000000
p=8.0000000000000000
n=20.0000000000000000
r=2.0000000000000000
dia=3.0000000000000000
rad=2.0000000000000000
d=1.8194444400000001
s=5.0000000000000000

Using the Data Entry fields in the Prompt area, specifically for a line, all the listed macros and parameters seem to evaluate properly when executed in the Length field. However, if using the Angle field, any macro name or parameter name that starts with the letter 's' returns 0.0 and any with a single letter name of 'd' likewise returns a 0.0 value. Oddly, macro names starting with 'd' but having additional letters work properly.

More puzzling, using the Total Angle field for the Center Point Arc, an "sb", 's' or 'd' evaluation simply does nothing--no return value at all, just a squawk from my iMac's speaker!

Tested in both ViaCAD V8 and V6