Mirror

[buzz lightyear]

Hi guys,
I am having troubles trying to mirror objects. If use the isolated code on a TOP view in rhino it works fine. But if I run it on a front view it flips the mirror.

Python Code:

import rhinoscriptsyntax as rs
 
ECAA2 = []
 
mirrorSp = rs.CurveStartPoint(GridAA_MirrorLine)
mirrorEp = rs.CurveEndPoint(GridAA_MirrorLine)
 
for i, crv in enumerate(EdgeCurvesAA_1):
    ECAA_mirror = rs.MirrorObject(crv, mirrorSp, mirrorEp, True)
    ECAA2.append(ECAA_mirror)
 
EdgeCurvesAA_2 = ECAA2

I tried to fix the problem with matrix transform, but the same problem occurs:

Python Code:

import rhinoscriptsyntax as rs
 
ECAA2 = []
 
GridAA_MirrorPlane_N = rs.PlaneEquation(GridAA_MirrorPlane)
GridAA_MirrorPlane_Or = rs.EvaluatePlane(GridAA_MirrorPlane, (0,0))
 
xform = rs.XformMirror(GridAA_MirrorPlane_Or, (GridAA_MirrorPlane_N[0], GridAA_MirrorPlane_N[1], GridAA_MirrorPlane_N[2]))
 
for i, crv in enumerate(EdgeCurvesAA_1):
    ECAA_mirror = rs.TransformObjects( crv, xform, True )
    ECAA2.append(ECAA_mirror)
 
EdgeCurvesAA_2 = ECAA2

any ideas of what I am doing wrong?

Many thanks,
buzz