CookieContainer.SetCookies do not parse version=x?

[greenxiar]

Very Simple Code:
CookieContainer cc = new CookieContainer();
cc.SetCookies(new Uri("http://some.com/"),
"a=1; b=2; path=/; domain=some.com;");
cc.SetCookies(new Uri("http://some.com/"),
"a=1; b=2; version=1; path=/; domain=some.com;");
First SetCookies pass, but the second failed!

My platform is DotnetFramework 2.0/VS2005