Parameter id for ESC Telemetry

I am using Kakute H7 for drone control and unfortunately I run out of available UARTS.
I would like to use ESC telemetry UART for GPS input. I can start it manually from nsh console with command:
gps start -d /dev/ttyS5 -b 115200

But i cant set this UART from parameters:


Does anybody know the id of this uart in parameters, so I can set it with manual entry ?