playSound Raspberry pi 3

Hello there,

I cannot manage to get the playSound working.

I have a switch on my sitemap that is supposed to trigger a sound once the switch state is updated, but I cannot get any sound working so far using the built-in funtion playSound()

I have checked this post here but it does not solve my issue : Problem with playSound function

Here is my code, Rule_Trigger is the name of my switch on the sitemap:

rule "rule triggered by RULE TRIGGER"
Item Rule_Trigger received update

I have tried to trigger other actions appart from playSound and it worked. For instance when I play the sound using a command line it works fine :
executeCommandLine(“omxplayer /opt/openhab/sounds/doorbell.mp3”)

Any ideas?