3 variables, how to trigger something if they have a value

Say I have three "presence" variables:

JohnHome
SallyHome
BobHome

If all of those are suddenly false, I'd like to trigger an action once. Is there a good way to do this?

Thanks

If I understand, I think you'll need three triggers--one for each variable.

Variable JohnHome:
Trigger: when JohnHome becomes false
Condition if ALL conditions match rules:
if SallyHome is false
if BobHome is false
Action: whatever action you want to take.

Variable SallyHome:
Trigger: when SallyHone becomes false
Condition if ALL conditions match rules:
if JohnHome is false
if BobHome is false
Action: whatever action you want to take. (same action as above)

etc.

I (think I) do this with a virtual device group.

Select the three variables within the virtual device.

Then trigger off the virtual device - if it's on then at least one person is home.

I'll double check later.


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