Hello everyone. I need your help.

I want to add chamfer dimension which the tip of arrow to be at the midpoint of the chamfer edge with API(Macro), but I could not find how to. 

If anyone knows how to use the API to achieve following “What I want to do”, please let me know. Followings are the details.

- I want to use API methods to do the following.

  - Click “Smart Dimension” > “Chamfer