"C:\Program Files\Bohemia Interactive\ArmA\arma.exe" -nosplash -mod=@ACE -mod=@CWM
-h is right you may need to do something like this,,,, ACE and CWM are addon folders but i need to explain in more detail how to to that note that the above is in target on the .exe propertys right mouse click
the folder would look like this -
ACE "folders name" inside that folder would be a folder called "addons" inside the addons folder would be your addons
that simple