auto incrementing block attributes

Hi

I'm new to DraftSight but not to CAD, I was a long time AutoCAD user and had a fantastic little VLX script InsertC which would auto increment definitions in my blocks from a selection I made, starting from a number I entered, and also do prefixes or suffixes if required.

I am looking to replicate this in DraftSight wondering if this is possible, so far its the only things I am missing from AutoCAD

I have attached InsertC for reference

Thank you in advanced

Tim