Hi, Welcome to the Forum Rataj !
Here are all important links:
viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions
It should!if i try to do this in automation track it s not working
What preset are you using?
In LMMS we can detune in two ways:
* Automate pitch
* Use the detune-tool in piano-roll:
https://lmms.io/wiki/index.php?title=Pi ... tor#Detune
Have you tried both?
Let us know the outcome :)