Generating Surfaces in a DXF File

Hello, I am currently using the DXFLib for Matlab: http://www.mathworks.com/matlabcentral/fileexchange/33884-dxflib

I am trying to generate DXF files automatically using MATLAB. I have however an issue to generate surfaces. I am able to draw lines easily, but I am not able to find a way to use this library to make polysurfaces. Has someone been able to do that? I found alternative scripts to make surfaces to DXF files (surf2dxf), but this doesn't work either.

Thank you in advance for your help.

Best, Julia