Can't save bounding boxes in a Text file

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) 2080Ti
• DeepStream Version 4.0 (Docker)

I have my custom model in (using Nvidia Transfer learning toolkit) . It runs successfully and saves the output. I want to save the bounding boxes in a text file. Which .cpp file I have to change for writing in text file?

we have gie-kitti-output-dir property in config which can save bbox info to file.