Using Programming Languages other than VBA

Sub Example_UserCoordinateSystems()
	' This example finds the current UserCoordinateSystems collection and
	' adds a new UCS to that collection.

	Dim UCSColl As AcadUCSs
	Set UCSColl = ThisDrawing.UserCoordinateSystems

	' Create a UCS named "TEST" in the current drawing
	Dim ucsObj As AcadUCS
	Dim origin(0 To 2) As Double
	Dim xAxisPnt(0 To 2) As Double
	Dim yAxisPnt(0 To 2) As Double

	' Define the UCS
	origin(0) = 4#: origin(1) = 5#: origin(2) = 3#
	xAxisPnt(0) = 5#: xAxisPnt(1) = 5#: xAxisPnt(2) = 3#
	yAxisPnt(0) = 4#: yAxisPnt(1) = 6#: yAxisPnt(2) = 3#

	' Add the UCS to the UserCoordinatesSystems collection
	Set ucsObj = UCSColl.Add(origin, xAxisPnt, yAxisPnt, "TEST")

	MsgBox "A new UCS called " & ucsObj.name & " has been added to the UserCoordinateSystems collection.", vbInformation, "UserCoordinateSystems Example"
End Sub