Grails write xml file to network folder in windows

writeXML.groovy

import jcifs.smb.*
import groovy.xml.MarkupBuilder
import org.custommonkey.xmlunit.*



def writer = new StringWriter()
def xml = new MarkupBuilder(writer)
xml.records() {
  car(name:'HSV Maloo', make:'Holden', year:2006) {
	country('Australia')
	record(type:'speed', 'Production Pickup Truck with speed of 271kph')
  }
  car(name:'P50', make:'Peel', year:1962) {
	country('Isle of Man')
	record(type:'size', 'Smallest Street-Legal Car at 99cm wide and 59 kg in weight')
  }
  car(name:'Royale', make:'Bugatti', year:1931) {
	country('France')
	record(type:'price', 'Most Valuable Car at $15 million')
  }
}

def ntlm = new NtlmPasswordAuthentication("", "username", "password"); //Authenticate without DOMAIN
SmbFile file = new SmbFile("smb://MYPC/Users/users/targetFolder"+"/quchfile.xml",ntlm); 
SmbFileOutputStream newFile = new SmbFileOutputStream(file,true) // true = append each time write to this file
newFile.write(writer.toString().getBytes()) //start writing
newFile.close()