Printing an Excel sheet to PDF - Print to filename

Hi, I am using the .PrintOut solution found on this page: http://www.mathworks.com/support/solutions/en/data/1-BBJDW0/index.html?product=ML&solution=1-BBJDW0

I am trying to use the PrToFileName argument, but it is still asking for a filename to save as. I am using the following code:

hWorksheet.Range('A1:N10').PrintOut(1,1,1,'False','ScanSoft PDF Creator!','True','True','C:\test.pdf');

So the code saves the PDF, but it asks me for the filename instead of taking it from the argument. Am I doing something wrong?

Thanks