Volume Glitch Help

Shotstack API
1

Hello,

I want to ask for help regarding the volume. No matter how much it is raised or lowered, nothing changes. I’ve tried all combinations of decimal and other formatting, yet the volume is the same.

2

Hello? support help 2020202020

3 
{
  "src": "https://s3-ap-northeast-1.amazonaws.com/my-bucket/music.mp3",
  "effect": "fadeIn",
  "volume": 0
}

"volume": 0.5,

"volume": 0.7,