12MP IMX477 manual exposure and gain on xavier nx

1.Which seller did you purchase the product(s) from?
Tannatech
2.The Model number of the product(s) you have purchased?
B0250
3.Which Platform are you using the product(s) on?
Jetson xavier NX
4.Which instruction are you following?
Docs
5.Has your product ever worked properly?
No
6.What problems are you experiencing?
I am not able to manually control the exposure and gain and get the best out of camera on jetson xavier board. Please help on this.

I am using nvgstcapture -1 is this the good or which one will be best for the application.
7.What attempts at troubleshooting have you already made?
On forums
8.How would you like us to help you?