At first: I want to thank you very much for your kindful help and patience. I'm very grateful for that.
To my code:
As you see in post #7 I create an array of objects dynamically and give that to paramquery to create the colModel.
You wrote the first example looks correct to you.
I isolated one of this objects out of the array and added a screenshot of the object to this post.
For me it looks correct. But please have a look as it's still not working.