How to play Sound when all Booleans are true

Ah right.

So that’s not a Widget and you should change the name of it to BP_ (Blueprint) instead of WBP_ (Widget Blueprint) as that will cause confusion when talking to people.

You can use the Get Actor of Class node and then set the Actor Class to WBP_SM_Terminal_1 and then drag off the return and type Cast to WBP_SM_Terminal_1. The return from that (As WBP_SM_Terminal_1, you should allow you to to access your boolean value.

You will need to do it for each one of them.