Why does this not work?

If you create Polymask 1 and then you Create Polymask 2
How can you combine both masks to one simple mask?

Or simple ask:
How do I have to set it up so it will work?

First approach:
Poly Mask 1 + Poly Mask 2 = failed
Poly Mask 1 + Merge + Poly Mask 2 = failed

Thanks a lot for any little help!

Just connect them together:

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