What is SET REPORTBEHAVIOR setting? Does it happen with both settings 80 an 90?

>I've got a customer requirement for barcode 128 font on serial numbers. I'm using WASP technologies fonts and it does correctly translate the text correctly. When I use the report in VFP6, I get barcodes. In VFP9, the design window shows the barcode but the report preview window shows text. There used to be a problem in VFP 5, but they resolved it in SP3. Can't find any other documentation on the subject.
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