Hi @Yellowjacket98,
It looks like you are mixing two packages here (Civil 3D Toolkit and IterisCivilDynamo). That is why the warning mentions that it expects an input with object type IterisCivilDynamo.Networks.Pipe but was called with Autodesk.Civil.DynamoNodes.PipeNetworks.Pipe. This indicates that the two packages have two different constructors for the pipe object and cannot be used interchangeably. So you need to pick a package and stick with it.
If you go with the Toolkit, there is no dedicated node (yet) to set the HGL values, but you can use the ObjectExtensions.SetParameterValueByName node in the meantime.
You can set EGL and HGL using these parameter strings:
HydraulicGradeLineUp
HydraulicGradeLineDown
EnergyGradeLineUp
EnergyGradeLineDown