soundGroup problem

Hi. I'm making sound mods. But, soundGroup doesn't work. So, I can't progress making my mods....
--- Post updated ---
my settings is

etki_sounds.sbeam
["24v6engine", "vehicles/etki/sounds/24i/exi.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.5, 10.56, 0000, "MAXRPM", 000, 200, 500, 1200, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/exl.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.25, 2.1, 0000, "MAXRPM", 500 , 1200, 2300, 3900, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/exm.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.35, 1.1, 0000, "MAXRPM", 2300, 3900, 5800, 6700, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/exh.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.4, 1.1, 0000, "MAXRPM", 5800, 6700, 7800, 1299900, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/eni.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.1, 10.56, 0000, "MAXRPM", 000, 200, 500, 1200, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/enl.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.15, 2.1, 0000, "MAXRPM", 500 , 1200, 2300, 3900, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/enm.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.25, 1.1, 0000, "MAXRPM", 2300, 3900, 5800, 6700, ["engine_throttle"], [] ],
["24v6engine", "vehicles/etki/sounds/24i/enh.wav", "AudioDefaultLoop3D", "ENGINE", "rpm", 1, 0, 0, 0, 0.35, 1.1, 0000, "MAXRPM", 5800, 6700, 7800, 1299900, ["engine_throttle"], [] ],

etki_engine.sbeam
"soundGroup":"24v6engine",
"idleRPM":850,
"maxRPM":6000,
"inertia":0.17,
"friction":15
"dynamicFriction":0.022
"burnEfficiency":0.34
"torqueReactionNodes:":["e1l","e2l","e4r"]
"particulates":0.04
"energyStorage": "mainTank",
"requiredEnergyType":"gasoline",

 

This may help you:
https://www.beamng.com/threads/legran-v6-sounds.37473/#post-563601

 

I just have tried this method, but it still doesn't work.

 

Put the "soundGroup" in "engine" section, not "mainEngine".

Code:

    "engine":
   {
       "soundGroup":"soundName"
   }

 

Thank you! It worked!