Hello everyone... I how to change custom propertie...

# compose

[Yusuf Ibragimov]

Hello everyone... I how to change custom properties in KeyAttributes. I want to change my textColor black at 0 %, transparent at 50%, and white at 100% but I could find syntax json5.

Can anyone help me with some advice?
this is my motion_scene.json5 file https://gist.github.com/YusufbekIbragimov/24718c29cd6c3d262a53970d4d593a4d