When you add a Bluelock (vCloud Director) account to ScaleXtreme, we request a "Username" that enables us to link to your Bluelock account. This Username contains both your Bluelock username and your vCloud "organization name" (provided by Bluelock) and must be of the form user_name@organization_name. Note that your Bluelock username is usually an email address. So, for example, if your Bluelock username is "mark@foo.com" and your organization name is "foo", then the correct "Username" to enter in our form would be mark@foo.com@foo.