You can use it this way
- Flow 0.4 Play 3 Sounds Random
If…
Contact alarm went on
Then…
Logics: Calculate a numeric variable [RandomSoundSelected] as [RandomSoundN#]
- Flow 1.4 Play 3 Sounds Random
If…
[RandomSoundSelected] has changed
And…
[RandomSoundSelected] is exactly 1
Then play Sound1
Else…
Start flow ‘2.4 Play 3 Sounds Random’
- Flow 2.4 Play 3 Sounds Random
And so on