mutiple command line arguments visual studio 2008

I'm working on a project which uses command line arguments in VC2008

the argument is set vi开发者_如何学Ca Project->Properties->Debugging->command line arguments

eg:

root=C:\data\ 

I would like to add a second argument to this command line , I tried " " (space) and "&" but both break parsings on the first argument.

Is there a specific way to do this ?