how to change contour line property by vba?

[ahmed.ongame]

 hello

i want to change my current contour line property so i can add elevation to it and make it 3D like surface

both autocad and civil 3d will be fine for me

i have an 2D contour line the intersects with an text and i want to copy that text caption to my contours elevation

[MMcCall402]

You could make a Civil 3D Line/Curve label style to use as a contour elevation label. The line/curve label style has a Start Z property available. Contours are 2D so the Z value is the same along the entire contour. The label can be placed anywhere along the line/curve and also re-positioned later. Make a label style for a line and one for a curve so when the label applied, or re-positioned, from a line to a curve it will react appropriately. 

If the contour line is a polyline it needs to be a 'lightweight' polyline.  CONVERTPOLY  can convert them to be lightweight if needed.