求助会用vbs的高手们

我在画波导缝隙的时候用到下面一段语句，x（n，1）、y（n，1）是采用二维数组定义的坐标值，我运行的时候hfss提示“‘mm’is not a defined variable name in this context”
请问这个具体是怎么回事啊?红色字体的地方使用有问题吗?
For n = 0 To 4
     oEditor.CreatePolyline Array("NAME:PolylineParameters", "CoordinateSystemID:=", -1, "IsPolylineCovered:=",  _
     true, "IsPolylineClosed:=", true, Array("NAME:PolylinePoints", Array("NAME:PLPoint", "X:=",  _
     CStr(x(n,1))&"mm", "Y:=", CStr(y(n,1))&"mm", "Z:=", "0mm"), Array("NAME:PLPoint", "X:=", CStr(x(n,2))&"mm", "Y:=",  _
     CStr(y(n,2))&"mm", "Z:=", "0mm"), Array("NAME:PLPoint", "X:=", CStr(x(n,3))&"mm", "Y:=", CStr(y(n,3))&"mm", "Z:=",  _
     "0mm"), Array("NAME:PLPoint", "X:=", CStr(x(n,4))&"mm", "Y:=", CStr(y(n,4))&"mm", "Z:=", "0mm"), Array("NAME:PLPoint", "X:=",  _
    CStr(x(n,1))&"mm", "Y:=", CStr(y(n,1))&"mm", "Z:=", "0mm")), Array("NAME:PolylineSegments", Array("NAME:PLSegment", "SegmentType:=",  _
    "Line", "StartIndex:=", 0, "NoOfPoints:=", 2), Array("NAME:PLSegment", "SegmentType:=",  _
    "Line", "StartIndex:=", 1, "NoOfPoints:=", 2), Array("NAME:PLSegment", "SegmentType:=",  _
    "Line", "StartIndex:=", 2, "NoOfPoints:=", 2), Array("NAME:PLSegment", "SegmentType:=",  _
    "Line", "StartIndex:=", 3, "NoOfPoints:=", 2))), Array("NAME:Attributes", "Name:=",  _
    "Polyline1", "Flags:=", "", "Color:=", "(132 132 193)", "Transparency:=", 0, "PartCoordinateSystem:=",  _
    "Global", "MaterialName:=", "vacuum", "SolveInside:=", true)
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