Using Programming Languages other than VBA

Sub Example_Coordinates()
	' This example creates a polyline. It then uses the Coordinates
	' property to return all the coordinates  in the polyline. It then
	' resets one of the vertices using the Coordinates property.

	Dim plineObj As AcadPolyline

	' Create Polyline
	Dim points(5) As Double
	points(0) = 3: points(1) = 7: points(2) = 0
	points(3) = 9: points(4) = 2: points(5) = 0
	Set plineObj = ThisDrawing.ModelSpace.AddPolyline(points)
	ThisDrawing.Regen True

	' Return all the coordinates of the polyline
	Dim retCoord As Variant
	retCoord = plineObj.Coordinates

	' Display current coordinates for the second vertex
	MsgBox "The current coordinates of the second vertex are: " & points(3) & ", " & points(4) & ", " & points(5), vbInformation, "Coordinates Example"

	' Modify the coordinate of the second vertex to (5,5,0). Note that in
	' case of a lightweight Polyline, indices will be different because the points are 2D only.
	points(3) = 5
	points(4) = 5
	points(5) = 0
	plineObj.Coordinates = points

	' Update display
	ThisDrawing.Regen True

	MsgBox "The new coordinates have been set to " & points(3) & ", " & points(4) & ", " & points(5), vbInformation, "Coordinates Example"
End Sub