As usual, @Greg is spot on in his assessment. With there being no inherent context in a card visual, you will need to build that context using virtual tables. Here are a number of posts I’ve made on this very topic that hopefully should help you work through a solution.
If not, please do post a PBIX file for a more specific solution.
– Brian
PS – looking through these posts and seeing how frequently this question does come up, I’m going to put together a YouTube video on this issue – look for it to post later this month…