Hi @victornaeyaert
Ik zie Nederlands 🙂
Concat is not used properly.
Concat(Table, Formula, separator) needs a table in the first parameter.
I would assume you need Concatenate instead of Concat.
Please check the Syntax documentation.
Wat voor foutmelding geeft the ForAll? (The ForAll is Underline double red).
If you have any questions or feedback, please let me know. Have a great day! 😊
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