会用vbs的们

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)
Next

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