Struggling with multiple entities in one input field

Currenty I am working on a complex blueprint handling my shutters and the3re is one last issue I cannot solve. My blueprint is written in a manner, that it get triggers by the configured situations, but can be called manually as well. To achieve that, I do have to get the state of a lot of things to react to the situation as it is right now.

Now I am facing one problem. I would like to open shutters immedately when a smoke detectors signals an alarm. Therefore I have an input field having multiple: true set to configure several smoke detectors without creating a helper. The trigger for that works, but how can I get the state of this list of entities in the same way the state trigger does? (It triggers when one of the configured smoke detectors signals “on”)