Problem about using DAX filter for SSAS Tabular security

Hi,

I'm trying to implement the SSAS tabular security. Inside SSDT, I've created a role with the read database permission, I've added my login, I've added the DAX filter writing "= [AccountKey] = 0" for DimAccount table that doesn't contain any rows with this key value. After the deployment inside an Excel workbook I can select the DimAccount columns and see the related value. This is unexpected behaviour.

Any suggests, please?

Thanks