Finding records with empty field

[gear]

The last field in my table is 'Comments'. I want to find if any record or records with 'Comments' field empty. I created a query and added all fields from my table. In the criteria section I typed Like "null". But the query is not returning records where 'Comments' field is empty. I have deliberately added (for testing) a few records leaving comments field empty. This can be viewed clearly in Table view. But the query I made is not displaying the records. Please help.

 

[boblarson]

The criteria should be

Is Null

 

[gear]

Thanks, it works.