@m_adam Thank you very much! This is what I was looking for.

Hello @JohnSmith, without any further questions and other postings, we will consider this topic as solved and flag it as such by Friday, 17/06/2022. Thank you for your understanding, Ferdinand

For some reason that I do not understand, the modifier keys did not work before, now they work. Implementation of the plugin via UserArea instead of GeDialog will be more convenient, thank you for your answers, I will study this part of the SDK further. [image: Screen-Capture-Project1-1.gif]

@Macsmiller I apologize for the late reply. Here is the plugin. glTF Importer plugin I managed to finish it and integrate it into Cinema 4D. You can follow the updates here: glTF Importer topic Maybe I am asking a question in the wrong topic - where can I find some sample code that can be used to create various import settings and write them to default presets.lib4d?