Convert to PDF doc

Hi ,

I am trying to print the barcode in a PO, using SAP script and then converting it into PDF document using

using the SAP Function module ...CONVERT_OTF_2_PDF.

The PO prints fine when I try to print it from me22n. But I have a problem while converting to PDF.The Barcode doesnot print properly.Anyone please help me solve this problem ASAP.