How to change the speed/altitude/heading direction of VTOL from ROS ,and from pxh terminal with commander+param commands

I am trying to write code in ROS (via mavros) to change the transition of vtol and try to change the speed of VTOL.

Firstly, I tried to do these from pxh> with “commander” or using “param” commands; but every time when I type I get errors

I followed these PX4 website:

ERROR [param] Parameter speed not found. etc

If it is possible, would you show me and guide me about how to write these parameters correctly in pxh terminal and how to write these in ROS too? thank you very much. I am newbie with these, so I will be very glad if you would help me and guide me, thank you.