Use both ObjectLayer() & CopyObject(), Input Type GUID or Curve?

[lmnoc1]

Hi I am using gh python on curves.
ObjectLayer() to get input curves layer, and CopyObject() to copy them
ObjectLayer() only works if I set input param to GUID,
CopyObject() only works if I set input param to Curves, or ghdoc object

I am looking at these two posts but still stuck

Python in Grasshopper (guid and geometry)

You’re literally performing fewer computations by skipping all the GUID stuff (which is generally the bulk of many rhinoscriptsyntax functions), which on large enough cases will be noticeably faster. Sometimes by quite a lot, other times barely noticeable. Edit: Here’s one example I had open in Sublime Text: [2020-01-29 14_35_11-C__Users_andersh_AppData_Roaming_McNeel_Rhinoceros_6.0_Plug-ins_IronPython (814d] Where the mesh is generated on line 101 using RhinoCommon.

Get layer of an object with rs.ObjectLayer(x) inside Python compnent

Thanks @clement, Is it possible to use rhinoscriptsyntax ?

So I am currently setting to GUID
sc.doc = Rhino.RhinoDoc.ActiveDoc
id = rs.ObjectLayer(geo)
sc.doc = ghdoc
The above ObjectLayer(geo) is working

    copy = rs.CopyObject(geo) 

The above not working, input “geo” prints a GUID but “copy” prints None
How can I get the convert GUID to Curve to make CopyObject() work?

[lmnoc1]

This works. Set input “crvid” param to GUID

sc.doc = Rhino.RhinoDoc.ActiveDoc
lay = rs.ObjectLayer(crvid) #doesnt matter inside outside the sc.doc switch
print(lay)
crv = rs.coercecurve(crvid) #must be inside the sc.doc switch
sc.doc = ghdoc
crvcopy = rs.CopyObject(crv) #must be outside the sc.doc switch