Using "Serial Terminal"

I’m sure this is a dumb question but i’m needing help with using serial terminal.

I’m runing simplefoc libraries and got my hover board moter spinning, yeh. After initializing it says in the serial monitor to enter value in the serial terminal to change velocity.

I put a number in serial monitor hit enter, nothing happens. Windows 11.

When running find kv rating library, serial monitor says enter Command K to get kv rating. Command is a mac function. I couldnt figure out what to enter.

Following this as I have the same problem!

Hoping someone will take a moment to answer my question

You most probably need to type a letter before the number.

Depending on your code, you will have something like this
command.add('T', doTarget, "target voltage");

In this case, T followed by a number should work.