...
Let's type in first jjupin for Published and try to fill in the second value for Not published. At this time, the values for Product Name and Product Id are dynamically changed depending on the value of the field Published as long as Not published. 
In the mean time we can type in a value for Not published as well.
Let's now use the auto completion to see from what values we cna can choose to change the main database custom field Product Name: 
The only option left is the one displayed. This is equals with the value of Published.