Line break in exchange appointments

I'm using the EWS (Exchange Web Service) Api with VB.Net to create appointments and I couldn't get it to accept the newline character.  Everything kept getting printed on one line and seemed to ignore my newline formatting.  vbNewLine didn't seem to work.  I also read something about having to put in extra spaces at the beginning or the end of the line, but that also didn't work.  I finally found a post which advised that appointments are stored in html format.  What finally worked was the html line break "<br />".

Thanks to Luke for the answer.