Python_ Orientation Object

Hi all,

Some of Python code, which works perfectly by running script, doesn't work within Python module in Grasshopper. It is quite often to say " Parameter must be a Guid or string representing a Guid ".

I looked through discussions about the difference between Rhino Object and RhinoCommon Geometry and so on, so I briefly understood on issue, but still confused.
Some of command, such as rhinoscriptsyntax.AddLine, works with assigned points, but "OrientObject" command returned the error message.

I tried to change type hint from something to "ghdoc object when geometry", but it doesn't work.

Could anyone kindly help me sort out this problem?

many thanks,