Using Programming Languages other than VBA

Sub Example_ExtLine2Point()
	' This example creates an aligned dimension and then changes the
	' ExtLine2Point property for that dimension.

	Dim dimObj As AcadDimAligned
	Dim point1(0 To 2) As Double
	Dim point2(0 To 2) As Double
	Dim location(0 To 2) As Double

	' Define the dimension
	point1(0) = 5#: point1(1) = 5#: point1(2) = 0#
	point2(0) = 10#: point2(1) = 5#: point2(2) = 0#
	location(0) = 5#: location(1) = 7#: location(2) = 0#

	' Create an aligned dimension object in model space
	Set dimObj = ThisDrawing.ModelSpace.AddDimAligned(point1, point2, location)
	ZoomAll
	MsgBox "The current value for ExtLine2Point is " & dimObj.ExtLine2Point(0) & ", " & dimObj.ExtLine2Point(1) & ", " & dimObj.ExtLine2Point(2), vbInformation, "ExtLine2Point Example"

	' Change the endpoint of the second extension line
	point1(0) = 12: point1(1) = 5: point1(2) = 0
	dimObj.ExtLine2Point = point1
	dimObj.Update

	' Return the endpoint of the second extension line
	' Note that the return value is a Variant
	Dim retPoint As Variant
	retPoint = dimObj.ExtLine2Point

	MsgBox "The new value for ExtLine2Point is " & dimObj.ExtLine2Point(0) & ", " & dimObj.ExtLine2Point(1) & ", " & dimObj.ExtLine2Point(2), vbInformation, "ExtLine2Point Example"
End Sub