Json help in sqlserver 2012

I have a table which has column which store the values in jason format of upto 8000 characters.
I need a query to update the values.

Please help

take a look at this article: http://sqlhints.com/tag/update-json-column-value-in-sql/

Thanks Jason for help.

This may not work since this is for sqlserver 2016 and i m using sqlserver 2012