I am a newbie. Say I have the following: h = 0.1; out[] = Extrude {h,0,0} { Surface{1, 5, 14, 10}; Layers{10 }; Recombine; }; How do I get the length of the out array. Thanks, Prakash. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.geuz.org/pipermail/gmsh/attachments/20111212/948c1de3/attachment.html>