What do you set in the "column" field for adding a minimum words validation via the Field Validation module? I'm creating a validation rule on a text field via the Field Validation module. On the create screen it asks for "Column" and includes this description:


  A column defined in the hook_field_schema() of this field.


I do not understand what I need to enter here. Can anyone explain?
This may help you out....

Field > Appropriate column value


Normal field > "value"
Taxonomy field > "tid"
Date field > "value" and "value2"
Node reference field > "nid"
User reference field > "uid"
Link field > "url","title","attributes"