Question from ray tracing: my all path properties are the same and remain unchanged

[Wenyuan0830]

I want to extract my path properties and I tried the code from the API document. However, the output properties are weird, especially for the propagation delay and the channel coefficient. Furthermore, when I change the path_idx, the output path properties remain unchange.


And I also attached my path preview. I load the scene from blender as the XML file. Can someone help me figure out what is happening? Thanks a lot!