whenever I create a smart object for a SharePoint list, The "ID" field is the only one that is set as the unique field.

is there a way to change that? I have few lists interconnected with each other, by a custom field named "field7". I would like to select that to be the field to pass data through.

Also, if this isn't possible, I saw there is Smart-object Association, in that tab, I can associate the smart objects with the field I want, but I have no idea how to use that association? is it possible to use it between views in a form?

thanks!