Hello @Hohlucha,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment. Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support. Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

This is a development forum and your question does not seem to be development related. Please read our forum guidelines lined out above. I have moved this topic into General Talk for now. When this is indeed an end user question we must ask you to use our Support Center, the developer forum is not the right place for end user questions. When this is a development question, then please line out the current code you have and provide a meaningful problem description.

Cheers,
Ferdinand

How to create Preference hierarchy child tree item