Is it possible that from a drop-down text box depending on the option selected, you can generate an empty field in the associated database? This would mean that if the answer changed the field of the database with some value, it would be empty.
You should that if you save this value to the collection, it’ll be saved as a white-space.
It’s not equal to deleting the value from collection “cell”. It if you query the collection for empty value, you want get this value (it’s not empty).
You can delete a value using code though…