Adding new barcode font to FOP on Weblogic

Hi , I have a barcode TTF file, I am trying to add this font, so that when I execute the statement in a database package :

apex_util.get_print_document

 ( p_report_data    => l_xml,  

 p_report_layout   => l_xslt,

 p_report_layout_type  => 'xsl-fo',

 p_document_format   => 'pdf' );

I have my reference to the font in my xslt file.

To reiterate, I want to use barcodes in my PDF, so I need to install the TTF font file and configure my environment so that the new font gets used.

Cheers