CST - Getting results from CST using Python

Hey,

I am experimenting with the python interface. Specifically with the python library cst.results.

However, I am unable to access the results I am asking for.

I have attached a picture of CST Studio Suite for the project, where the result tree folder is visible. And the 3D Run Id's.

Using the following python code:

import cst

import cst.results

project = cst.results.ProjectFile('CST_test/CST_test.cst', allow_interactive=True)

items = project.get_3d().get_tree_items()

result = project.get_3d().get_result_item('1D Results\\S-Parameters\\S1,1')

I get the attached error