Hi @thomasjohnsen82​ 

You should be able to do this after completing BIM Tutorial At the end of the tutorials is writing examples.

Writing to IFC

AutoCAD to IFC

This example demonstrates how to convert 2D rooms from an AutoCAD floorplan to Spaces in IFC.

Updating IFC

This example demonstrates how to convert an existing IFC file back to IFC, while updating some of the Space property sets from an Excel table.