controling mpsyt with bash

[devros]

hello,
I'm trying to use mpsyt https://github.com/mps-youtube/mps-youtube to make simple selector switch to play predefined songs over HDMI. it works really well when i make bash script with this command

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mpsyt "//(name of artist or songs name), 1, all -a shuffle" 

but problem is with implementing stop (or kill) function
tried this simple code to kill process, but it works only in shell not in domoticz..

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#! /bin/bash
sudo /usr/bin/pkill mpsyt  > /dev/null
sudo /usr/bin/pkill mpv  > /dev/null
exit 0

problem is maybe that script in shell is active and i cant send another command, but how fix this, or im missing something ?
it would be really great to create this way some favorite playlist and control them from domoticz

any idea?

[devros]

ok find how to fix it if is somebody interested...
here is fixed first script (process is sent to background)
with this its working so you can have switch that play mpsyt on dummy switch and second script to kill this process..

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#! /bin/bash
mpsyt "//(name of artist or songs name), 1, all -a shuffle" > /dev/null < /dev/null &
exit 0