Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32G474xx/HRTIM_Common/ADCUR#0x0
HRTIM ADC Trigger Update Register
AD5USRC
AD6USRC
AD7USRC
AD8USRC
AD9USRC
AD10USRC
https://github.com/cmsis-svd/cmsis-svd-data