Need Action Button available in DWA - iNotes

I am a Domino Administrator and can pick through a little code on the Development side. We do not have any Domino Developers at our company. I have had to add an Action button to our Mail Template for all of our Notes Users. I have done that successfully in the Notes Client but, I cannot get it to appear in the DWA / iNotes Client.

Here is what works on the Notes Client:

IntLogin:=@NameLookup([Exhaustive];@UserName;“InternetAddress”);

@URLOpen(“http://NotADomServer.OurCompany.com/homepage/index.jsp?username=”+IntLogin)

Any suggestions will definitely be appreciated.

Thank you.

Marcie