for $d in Root("/EditDB/EditPerson") 
let $newdoc :=  
   update $d using  
      insert value <Company>Ford</Company> into $d/Person 
where $d/Person/City = "Paris" 
return  
   replace document GetDocumentId($d) with $newdoc  

  1$EditDB:EditPerson$1-0-0
  1$EditDB:EditPerson$1-10-0
  1$EditDB:EditPerson$1-20-0
  1$EditDB:EditPerson$1-30-0
  1$EditDB:EditPerson$1-40-0
  1$EditDB:EditPerson$1-50-0
  1$EditDB:EditPerson$1-60-0
  1$EditDB:EditPerson$1-70-0
  1$EditDB:EditPerson$1-80-0
  1$EditDB:EditPerson$1-90-0