Title describes all the problem that I have, I take this macro from the CodeStack I think, and then rewrite it in some moments, don remember where exactly because it was long ago.

Macro make DXF files of flat pattern sheet-metal Part or Assembly Components.

I highlight parts of code where I think there can be problem, but don't take this too seriously, I'm new to macro and API.
 

Enum SheetMetalOptions_e