[#3419] - Unable to display Chinese characters in PDF generated by ireport

We have developed a report which can display Asian characters like Chinese, Japanese and Korean using "STSong-Light" font. We developed this report using ireport 3.7.6. Now after upgrading the ireport to 5.2.0 version, the same reports are not working fine. They are loading empty pages. This has become a big concern as we are certifying Chinese locale for our product and we need this fixed ASAP.

We are using conditional styles like this
<style name="ChineseStyle" isDefault="true">
<conditionalStyle>
<conditionExpression><![CDATA[new Boolean($P{REPORT_LOCALE}.equals(Locale.CHINA))]]></conditionExpression>
<style pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H"/>
</conditionalStyle>
<conditionalStyle>
<conditionExpression><![CDATA[new Boolean($P{REPORT_LOCALE}.equals(Locale.KOREA))]]></conditionExpression>
<style pdfFontName="HYGoThic-Medium" pdfEncoding="UniKS-UCS2-H"/>
</conditionalStyle>
<conditionalStyle>
<conditionExpression><![CDATA[new Boolean($P{REPORT_LOCALE}.equals(Locale.JAPAN))]]></conditionExpression>
<style pdfFontName="HeiseiKakuGo-W5" pdfEncoding="UniJIS-UCS2-H"/>
</conditionalStyle>
</style>

Please contact us for any questions at gnatarajan@manh.com.

Also can you please share a sample jrxml which displays chinese charaters which are loaded from property file for ireport 5.2.0 version. That will be really helpful.