Hi @MaciejW !
Welcome to the Speckle Community and awesome to see you making a converter for Structural software.
My suggestion is to read a bit about our Structural Object kit here: Introducing Structural Classes for Speckle!. Basically it’s a good idea to inherit classes from other objects in a pyramid approach.
Do you have any plans on publishing this converter/connector or just using it for internal use ? If you plan on publishing this converter we can discuss more about how to create a better structural object model to support IdeaStatica more.
Cheers,
Reynold