Script automation to export every single layer to a single .dxf drawing

Hi. 

I'm trying to find a easy and working way how to do it automatically -> for all design layers (opened in FAB3000) I would like to get .dxf drawing files. One layer -> one .dxf file. 

I need to have .dxf files to import them to Mentor Graphics PADS (because Mentor Graphics PADS heve no supoport for ODB++ import.) 

Normally for 5 layers I need to make a few separate steps multiplicated 5 times:

I would like improve my work to generate all separate .dxf files in one step. So maybe I could to write a FAB3000 script. 

But how to do it?

Could someone help me please?

Best regards

Mariusz