Currency symbol ¥ has replaced by ? in PDF

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I have exported a report into PDF using GIOS.pdf. Report have contained currency symbol (¥0.00). After exporting report when I open the report I don’t see the currency symbol. I see as the symbol with replaced by ? Sign (?0.00)
How can I see actual symbol (¥) after exporting symbol??

Please help me

My exported Code is -

PdfDocument myPdfDocument=new PdfDocument(PdfDocumentFormat.Letter_8_5x11_Horizontal);			

Font FontBold=new Font("Courier New",9,FontStyle.Bold);
PdfTextArea reportTest = new PdfTextArea(FontBold, Color.Black, new PdfArea(myPdfDocument, 50, 20, 750, 50), ContentAlignment.MiddleCenter, "testing Currency is ¥0.00 ");	
			
PdfPage newPdfPage=myPdfDocument.NewPage();
newPdfPage.Add(reportTest);
newPdfPage.SaveToDocument();
myPdfDocument.SaveToFile("Example3.pdf");