Multi-page WORD documents

Hello, I'm using c# / .NET to code. I am having trouble writing signatures on pages other than page(0) of uploaded documents. In my DocumentPackage, I use the "FromStream" method and stream a multi-page (3) pages document. However, in code, when I simply write, .WithSignature(SignatureBuilder.SignatureFor(email1Signer1).OnPage(1).AtPosition(100, 450)), an error is thrown. How do I tell the eSignLive system, I working with a mutli-page document, if the ".OnPage()" method is not the correct one. Thank you, DaveG