Try this...
MODE/MAN
F(PT)=FEAT/POINT,CART,0,0,0,0,0,1
MEAS/POINT,F(PT)
ENDMES
DECL/LOCAL,DOUBLE,dX,dY,dZ
dX=OBTAIN/FA(PT),3
dY=OBTAIN/FA(PT),4
dZ=OBTAIN/FA(PT),5
MODE/AUTO,PROG,MAN
F(PT2)=FEAT/POINT,dX,dY,dZ,0,0,1
MEAS/POINT,F(PT2)
ENDMES
This will take a point in the -Z direction at the same position as your manual touch. The 3,4 and 5 in OBTAIN represent the ordinal position of the minor words, 3=X which is third minor word of FEAT/POINT.
If this doesn't work, it is because I typed it by hand! You can always buy the DMIS spec from www.cam-i.org for more information on high level and substitution.
Regards
Keith Morton
LK Metrology Systems Inc