[Phone] Ability to use person as 'device' to send notifications to

I just tried creating a flow which sends a notification about the trashcan when someone comes home, but I found it's not possible in a single flow. The problem is that I have to specify a phone to send the notifications to, so I have to create a new flow for every person. This is an issue especially with the trashcan, since there is also no variable to use there, so I have to create a separate flow for both types of trashcans, which results in four flows.

It would be nice if I can use the 'person' variable from the presence card as the target of the notifications. Of course this would be a problem when a person has multiple devices, but I guess Homey could send a notification to all devices then.