Hi Finema,

This is an alternative simpler approach:

Click RUN
If nothing happens, click "Surface Index" switch

The target surface should be index either 0 or 1.
In the event nothing still happens, try changing "const" node values to 2 & 3

& if you desire the bottle to be shown, click "switch" to reveal

James

for .3dm & .nod file see:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7777.1043