Automated creation of points in "3D part" with python script

Hello,

I'm trying to automate the creation of points in a geomtrical set. I'm working in the newest release of the 3DExperience in the CATIA Engineering Rules Capture Application. As a student of the University of Applied Sciences Trier (EDU Center of Excellence) we should have access to all the liscenses needed.
The problem (Screenshot1): referencing the geometrical set just by it's name either as string or variable name doesn't work.
There is an example in the offcial documentation (Screenshot2) that should do what I want to do, but it doesn't work for me (Screenshot3).

Handling the inputs with the argument list works, but is not an acceptable solution in the long term.

Sorry for reposting but my question could not be answered until now.

Edu ​​​​​​​