getParameterValue question - Can't retrieve a specific parameter

I’m new to the API (C#), and I can’t successfully assign a parameter. I searched in the documents and previous topics - I have found the line I need:
FMOD.Studio.EventInstance.getParameterValue(stringName, out value1, out finalValue)

Though, what do value1 and finalValue mean?

I also watched a youtube tutorial, but it seems like it’s using an old syntax (

My goal here is to create an updated variable which contains a specific parameter from FMOD.
Will appreciate any help,

The API docs have more information on the parameters: