List of codes/ setting HGL

Another new Dynamo user here…
I have found a set-HGL mode but any time I try to use it it always gives me an error saying it expects some “argument” from another package I have installed into my Civil3D Dynamo. Also, I wouldn’t mind trying to create my own node (or attempting to), but I cannot find a list of strings to use (such as the code pertaining to setting HGL. I would guess it is something like “SetHGLUp” or “HGL.Up.Set”) Without such a list I feel like I am working in the dark.
Any help is appreciated!

I have a found a Set HGl “node”… fat thumbs this morning.