Is it possible to set a variable to a random number from an array?

Questions & Help
1

Hello,
I have a few flows involving sounds and a variable (SoundVar) that determines which sound to play:

  • If SoundVar is 1 then play song one
  • If SoundVar is 2 then play song two
    …
    I have 5 of these flows.
    I can pretty easily calculate a random number to put in SoundVar with {{round(random(1,5))}} when an action happens.

My question is, can you do this if specifying which numbers to randomize ?
Example:
When pressing button 1 I want to use sound 1,2,3,4 and 5.
When pressing button 2, I want to use sound 2,4 and 5 but not 1 and 3.
For my doorbell I want to use sound 1,3 and 4 but not 2 and 5.

Is there a one-liner that one can put into the "calculate variable as … " that can do this?

Edit: I would like to say that this is just a small example of a larger picture and for this few flows, I would probably just create different variables and flows for each device. It is going to be larger and encompass other things than just sounds, meaning that I could use it for other types of flows as well.

2

It’s in Dutch but it can help what you want to achieve. Google translate is your best friend
Link

3

Thank you for the answer.
Don’t get me wrong here. This method is viable.
But I feel like it is only to a certain degree. Specifically it is limited by the maximum of 3 in “And/or”.

For others reading: I would create a new variable for each device that would trigger the sounds and have different “playlists” and would then set it up in each flow for the sounds in the “And/or” section.

Example: For the doorbell above (should play 1,3,4), I would make a new variable called “DoorBellSounds”.

  • In the doorbell flow, I would make a card with “Set DoorBellSounds as {{round(random(1,3))}}”
  • In each of the flows for Sound One, Sound Three and Sound Four I would add a card in the “And…” section to trigger it if SoundVar is one number or if DoorBellSounds is another number.

I know that I am being picky here, but the reason for the random with an array of numbers is that this could be solved by a single card if it is possible.

For clarity’s sake I can try to give an example even though I know it is not a real calculation:

It would be something like {{random([1,2,4])}} that would provide a random number of either 1,2, or 4.

4

It could be like this {{round(random(1-4),0)}} in that case you als have to make a extra flow, as it becomes number 3 start te flow again