How to get pyds.NvDsComp_BboxInfo real value?

How we get the real data from pyds.NvDsComp_BboxInfo?

I always had
<pyds.NvDsComp_BboxInfo object at 0x7ff126d0e9d0>

Whenever i do
obj_meta.detector_bbox_info & obj_meta.tracker_bbox_info

From
obj_meta = pyds.NvDsObjectMeta.cast(l_obj.data)

Using sample of
deepstream_test1.py

It looks like i have to cast that but i don’t find any documentation show me how to do that
https://docs.nvidia.com/metropolis/deepstream/python-api/PYTHON_API/

sorry to tag you @Fiona.Chen ,
could you land me your help?

Regards

Please refer to Python Sample Apps Source Details — DeepStream 5.1 Release documentation

Only DS5.1 version support NvDsComp_BboxInfo