请教如何引用另一个part里的直线？

我在part1里面建了草图并在草图里面建了几条直线。想在part2里面用part1里的线条做基准约束part2草图里面的直线。宏如下：

Language="VBSCRIPT"

Sub CATMain()

Set productDocument1 = CATIA.ActiveDocument

Set product1 = productDocument1.Product

Set products1 = product1.Products

Set product2 = products1.AddNewComponent("Part", "")

Set documents1 = CATIA.Documents

Set partDocument1 = documents1.Item("Part2.CATPart")

Set partDocument0 = documents1.Item("Part1.CATPart")

Set part1 = partDocument1.Part

Set part0 = partDocument0.Part

Set bodies0 = part0.Bodies

Set body0 = bodies0.Item("零件几何体")

Set sketches0 = body0.Sketches

Set sketch0 = sketches0.Item("草图.1")

Set bodies1 = part1.Bodies

Set body1 = bodies1.Item("零件几何体")

Set sketches1 = body1.Sketches

Set originElements1 = part1.OriginElements

Set reference1 = originElements1.PlaneXY

Set sketch1 = sketches1.Add(reference1)

Dim arrayOfVariantOfDouble1(8)
arrayOfVariantOfDouble1(0) = 0.000000
arrayOfVariantOfDouble1(1) = 0.000000
arrayOfVariantOfDouble1(2) = 0.000000
arrayOfVariantOfDouble1(3) = 1.000000
arrayOfVariantOfDouble1(4) = 0.000000
arrayOfVariantOfDouble1(5) = 0.000000
arrayOfVariantOfDouble1(6) = 0.000000
arrayOfVariantOfDouble1(7) = 1.000000
arrayOfVariantOfDouble1(8) = 0.000000
sketch1.SetAbsoluteAxisData arrayOfVariantOfDouble1

part1.InWorkObject = sketch1

Set factory2D1 = sketch1.OpenEdition()

Set geometricElements1 = sketch1.GeometricElements

Set axis2D1 = geometricElements1.Item("绝对轴")

Set line2D1 = axis2D1.GetItem("横向")

line2D1.ReportName = 1

Set line2D2 = axis2D1.GetItem("纵向")

line2D2.ReportName = 2

Set point2D1 = factory2D1.CreatePoint(51.876303, -14.673396)

point2D1.ReportName = 3

Set point2D2 = factory2D1.CreatePoint(128.967033, 77.136205)

point2D2.ReportName = 4

Set line2D3 = factory2D1.CreateLine(51.876303, -14.673396, 128.967033, 77.136205)

line2D3.ReportName = 5

line2D3.StartPoint = point2D1

line2D3.EndPoint = point2D2

Set geometricElements0 = sketch0.GeometricElements

Set Line2D0=geometricElements0.item("直线.2")

Set reference0 = part0.CreateReferenceFromObject(Line2D0)

Set geometricElements2 = factory2D1.CreateProjections(reference0)

Set geometry2D1 = geometricElements2.Item("标记.1")

geometry2D1.Construction = True

Set constraints1 = sketch1.Constraints

Set reference3 = part1.CreateReferenceFromObject(geometry2D1)

Set reference4 = part1.CreateReferenceFromObject(line2D3)

Set constraint1 = constraints1.AddBiEltCst(catCstTypePerpendicularity, reference3, reference4)

constraint1.Mode = catCstModeDrivingDimension

sketch1.CloseEdition

part1.InWorkObject = body1

part1.UpdateObject sketch1

End Sub

里面Set geometricElements2 = factory2D1.CreateProjections(reference0) 这里报错，有人能指点一下吗？高手一般怎么引用呢？

谢谢。