getParameterValue question - Can't retrieve a specific parameter

Hello!
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 (https://www.youtube.com/watch?reload=9&v=ui_dsz1zmWM).

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

The API docs have more information on the parameters: https://fmod.com/resources/documentation-api?version=2.0&page=studio-api-eventinstance.html#studio_eventinstance_getparameterbyname