Design Binder API Function

I found the macros by Lenny and Luke to be very helpful and I use the PDF and DXF save every day to save drawings to be sent out for manufacturing quotes. I use the drawing at Pack and Go to be sure all the components are attached. I also attach the PDF, DXF and a IGS for for our vendors.

What I would like to do it attach all three of these files which have the exact same filename (except for the extension) to the design binder so I do not have to attach them individually. SW only allows one selection at a time.

I tried recording the macro and it did not record much of the actions. Can anyone help me modify the PDF DXF save macro? I'm sure it's not much for someone with that talent!

SolidworksApi macros