get_date
Description:
Gets the current date value of the specified field of the meta container.
If the field does not have a set value, or it is of the wrong type, the method will fail.
Parameters:
| this | |
| meta_item | 
           The key for the this field to get  | 
      
| dest | 
           Destination into which the value under   | 
      
Returns:
| 
           true if the date value under   |