Add (not replace) multiple items to a Notion Multi-Select property


I’m trying to add (important: not replace the former entries) an option to an multi-select property in notion, but it doesn’t work. The error says, “OW Premium Mitglied” ist not possible to set.
Can somebody help me with the code?

These are the options:
Bildschirmfoto 2024-01-01 um 12.07.31

And this is the code i used:

Thanks so much for your help.

Welcome to the Make community!

What module are you using? Your screenshot doesn’t show that because it’s cropped.

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I use “Notion - Update a Database Item”

It looks like you may be passing the text value of the multi-select property in the “Map” function, instead of the actual array. You could try to replace the “64. Properties Value.Mitgliedschaft: Name” with the array token.

For example, in picture 2 there is a multi-select property named “type”. If I were to use this in a “map” function, I would select “Type”, and not the “Name” key nested within it