Update SQL Server

Hi All,
I want to update a column with NULL (using SQL Update Snap) How can I pass DB Null to a column? I have tried passing in “null” that did not work. Please let me know if you have any ideas. Appreciate all your help!

Passing in null (without quotes) should work. The below example works for me.

{ "ID": 1, "col1" : "Test", "col2" : null }