'How to place object on top of ui?

I'm trying to place a 3D object on top of a UI Image

But nothing works. Can anyone give an example of how to add a 3d model on top of a UI Image in a 2d game.

The strange thing is that I have all the objects closer to me in the Z- coordinate.

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Another oddity is that Sprite objects ignore hierarchy. They are always above the UI Image and the only thing they react to is Additional Settings

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Why does the hierarchy not work for me?
Can anyone explain what I'm doing wrong?
Where is the mistake?

unity3d


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