Cplane vs World Coordinates

Hi, This seems like a very basic question but for some reason I cannot find the right answer on this forum.

my problem is as follows: I want to draw geometry using rhinoscriptsyntax addpoints() and addpolyline() methods based on a user-defined starting point.

My set-up is as follows:

import rhinoscriptsyntax as rs
import Rhino.Geometry as rg

origin = rs.GetPoint("Set Origin")
if origin:
    plane = rs.ViewCPlane()
    plane = rs.MovePlane(plane,origin)
    rs.ViewCPlane(None,plane)

p0 = rs.AddPoint(0, 0, 0)
p1 = rs.AddPoint(2, 0, 0)
rs.AddPolyline([p0,p1])

But, when the points are drawn, they are drawn based on world plane coordiantes, not on the cplane I just defined. What am I doing wrong :)?

Thanks!

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