How to set the lineSeperators in an FlatFileItemWriter .

Code:
<bean id="ypgadjustmentWriter" class="org.springframework.batch.item.file.FlatFileItemWriter">
	 	<property name="resource" value="file:${YPGPaymentWorkDirectory}" />
	 	<property name="lineAggregator">
			<bean class="org.springframework.batch.item.file.transform.FormatterLineAggregator">
    			<property name="fieldExtractor">
        			<bean class="org.springframework.batch.item.file.transform.BeanWrapperFieldExtractor">
				        <property name="names" value="RecordTypeCode....." />
        			</bean>
    			</property>
    			<property name="format" value="%-1s%-..." />
			</bean>
		</property> 
		<property name="lineSeparator" value="\\r\\n"/>
  	</bean>
Here I want to set the lineSeperators as "\r\n" (i.e windows default lineseperator )
If I specific as "\\r\\n" , framework considers as a charater with 6 character word ('\','\','r','\','\','n') .

How to specfic escape sequences as line seperators for flatItemReaders...