How to set optical flow on pixv1? I have read the User guide but I can't find OPTICAL_FLOW_RAD

Here’s the user guide


I have also see the discussion

I can’t find the message like this:
https://discuss.px4.io/uploads/default/original/2X/1/16921266dbad0ecfca4be0dad5e494d578047c21.png![9}5WJY%K%(U(Z$WSGAQ)43|690x355]
mine is (upload://bDQ70MH930sKskgIDAArYi51RK0.png)

I can’t find the message like this:
https://discuss.px4.io/uploads/default/original/2X/1/16921266dbad0ecfca4be0dad5e494d578047c21.png