str_replace new lines

Hi, I am importing from json and the source json file contains \n at the end of each paragraph.

I am trying to replace the “\n” in the imported post content template with double new line, i.e. I would like to have the one more empty new line after each paragraph.

I am using the following without success, although it does the job replacing “|” with “,”

[str_replace( array( “|”, “\n” ), array( “,”, “\n\n” ), {content[1]} )]

Any ideas how to accomplish this?