[Barcode4j-users] barcode human readeable part not visible

[Matej H. <mat...@gm...>]

Hello,
I have just discovered this great project and I have one question.
I am using barcode4j with Apache FOP. When I run transformation, I get PDF with barcode, but "human readeable" part is missing (in place where there should be numbers, everything is empty).
I am using Apache FOP 1.0 + barcode4j.jar + barcode4j-fop-ext.jar version 2.1 (running from ORACLE database version 10.2.0.1.0 - java 1.4.2_04).

XML:
<?xml version="1.0"?>
<example>
  <heading>Hello, barcode world!</heading>
  <barcode>123456789012</barcode>
</example>
XSL:
<?xml version="1.0"?>
<xsl:stylesheet
	version="2.0"
	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
	xmlns:fo="http://www.w3.org/1999/XSL/Format">

  <xsl:output method="xml"/>
  <xsl:template match="example">
    <fo:root>
      <fo:layout-master-set>
	<fo:simple-page-master
		master-name="page">
	  <fo:region-body
		  region-name="body"
		  margin-top="0.5in"
		  margin-bottom="1in"
		  margin-left="0.5in"
		  margin-right="0.5in"
		  background-image="watermark.png"
		  background-repeat="no-repeat"
		  background-position-horizontal="left"
		  background-position-vertical="top"/>
	  />
	</fo:simple-page-master>
      </fo:layout-master-set>
      <fo:page-sequence master-reference="page">
	<fo:flow flow-name="body">
	  <fo:block font-size="18pt" margin="0.5cm">
	    <xsl:value-of select="heading"/>
	  </fo:block>
	  <fo:block margin-top="2.4cm" margin-left="3cm">
	    <xsl:apply-templates select="barcode"/>
	  </fo:block>
	</fo:flow>
      </fo:page-sequence>
    </fo:root>
  </xsl:template>

  <xsl:template match="barcode">
    <xsl:variable name="message" select="."/>
    <fo:instream-foreign-object>
      <barcode:barcode
	      xmlns:barcode="http://barcode4j.krysalis.org/ns"
	      message="{$message}">
	<barcode:ean-13>
	  <barcode:height>15mm</barcode:height>
	</barcode:ean-13>
      </barcode:barcode>
    </fo:instream-foreign-object>
  </xsl:template>
</xsl:stylesheet>

RESULT:


Yours sincerely,

Matej Hlastec