Cargo divider question

[1st Ram guy]

I have a adjustable cargo divider in my bed. It works great to separate items in my box. Is there a way to attach the divider with the tailgate down to act as a back fence? I did not see anything in the manual.
I have Ram boxes on my Ram.

 

[392DevilDog]

What year?. I am assuming a 2019 or 20.

The issue is that the bed divider was not to be used as an extender anymore as it blocls the taillights...

You can order the parts that mount by the tailgate opening.

There are quite a few threads here about this. Do a search...or if I have time I will post a link