Hi,
I'm new to power apps,
I have my data in 2 tables in Dataverse.
First table (Documentos) is my main data source and has a relationship with the second table (Fornecedores) to get "Nome dos Fornecedores" column data (from that second table).
With the help of the community my drop down filter was build this way:

And my gallery this way:

I want to apply that dropdown filter to my gallery but the red underline formula gets an error, and I believe is because of the blue square part of the code.
(Because this is an relationship column. The gallery gets his data from my main data source "Documentos" and Documents has a relationship with "Fornecedores table" to get is "Nome_Fornecedores" Column.
Can someone help me on that?
