Just a regular custom event that something else will call. This event will listen to the broadcasts of the widget buttons.
And in the fridge set up, is the variable from promoting Return Value to a variable?
Right clicking data pins gives you an option to automatically create a variable of the correct type. Rather than clicking 6 buttons and finding stuff on a long lists, you can promote it:
But you can, ofc, create the variable manually. It’s just a lot of clicking.