Use this function to return the modified date of the current entry. If the function is defined, the returned date will be stored in the synchronize datastore, and will be used to check whether the entry has been updated.

Inputs: xml (XmlDocument), document (Document)
Outputs: modifiedDate (string)
See also:  


function myPrefix_getEntryModifiedDate(xml, document)
   return "2011-11-11T11:11:11"