@til.shviger If I’m understanding correctly, mostly based on the links you shared, you are trying to add parameters to a family document while in a project environment? If yes, the DanEDU Dynamo package has nodes that will allow you to do this. See this link for example of the nodes in that package and how to use them:
https://forum.dynamobim.com/t/node-to-perform-load-into-project-action/14812/10?u=awilliams
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