Currency symbol ¥ has replaced by ? after converting pdf

See more:

C#

PDF

Hi,
I have set my currency symbol to ¥0.00 but when I produce a report PDF it shows ?0.00 instead of ¥0.00.
has anybody any idea how to solve this?

Thanks in advance.

(I have used GIOS pdf.net dll )
and the 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");