How to toggle RHIthread on Android at runtime?

I have a few questions for help.

1、How to toggle rhithread on Android at runtime? r.rhithread.enable?
2、Does opening rhithread on Android optimize performance?
3、Does rhithread require a UE version?(Android)

Can rhithread be enabled in both development mode and Shipping mode?(on Android Device)
I packaged the apk in development mode and then set “r.rhithread.enable 1“ to be ok,but in shipping mode is not ok.