In the Game Attributes, there is an attribute already set for music volume and sound volume. If you intend to use this, you will have to use the attribute in your "play sound" and "play music" behavior, instead of a fixed value.
This way, any changes to the global game attribute will affect all play sound and music behaviors.
In the expression editor, you can get to it by : Devices > Audio > Sound Volume or Music Volume
Comments
This way, any changes to the global game attribute will affect all play sound and music behaviors.
In the expression editor, you can get to it by : Devices > Audio > Sound Volume or Music Volume