RibbonX XML: How can I put in a carriage return or new line within " " marks

In a screentip I want to separate two paragraphs of text by a empty line.
To do that I need to add a new line or a couple CRs. How do I do that?

Example:
screentip="Hi, how are you doing. Thank you I am fine."

The above line gives me:
Hi, how are you doing. Thank you I am fine.

What I want is:
Hi, how are you doing.

Thank you I am fine.

I don't use XL2007, but this should work.
screentip = "Hi, how are you doing?" & char(13) & char(13) & "Thank you, I am find."
char(13) = carriage return
char(10) = line feed (if 13 doesn't work by itself then put both in)

Where are you using the screen tip- actually in the Ribbon?

Screentips, like normal tooltips, do not handle multiple lines.

The Supertip does though. In order to force a new line use

Hi, how are you doing? &# 13;Thank you, I am find.

Due to the board reading and actioning the syntax you will need to remove the space between # and 13;