Function AddTextToPDFFile

Adds text to a number of pages.

Parameters:
string sourceFilename: Filename of the source pdf file
string destinationFilename: Filename of the destination pdf file
int fromPage: First page where text is added
int toPage: Last page where text is added
ref PDFText textObject: PDFText Object containing the text to add

Return Value:
int: Number of pages that have been edited. 0 in case of an error.