It was bad to control or move the volume slider .. so i fixed that so it makes sense when you move the slider and now the volume stays at what you want .. it just like any other volume slider in other games.
You can now even modify the area that you control the slider .
Maybe someone can put it with the examples so more people can reach it . (After putting comments on the events so it's more clear to understand)
The original example is back to @indiestargames
This version (V2) is modified by me .
Hope it helps anyone out there
Itcho : https://coriandergames.itch.io/
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Enjoy the little things