Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB05/BLUE_REG/TIMEOUTREG#0x0
TIMEOUTREG register
Timer1 or Timer2 Timeout value (depending on Destination register)
https://github.com/modm-io/cmsis-svd-stm32