iTextSharp SetField method

Question

Is it possible to call SetField and have some parts of the text BOLD?

I'd like to set some of the text Bolded.

For example, using a HTML bold tag for illustration purposes:

I'd like to do something like:

AcroFields testForm = pdfStamper.AcroFields;

testForm.SetField("PDFFieldSubjectText", "This is <b>bold</b> text");