vCO 4.2.1 webview not auto calculating default value for text field

Hello, can anyone confirm whether or not webviews in vCO 4.2.1 (Windows version) allows for setting a default value using an action with upstream fields/inputs as parameters?  It works fine for generating a pre-defined list of elements, but for some reason it doesn't work for a default value (string field, text box).

If I fill in the previous field and refresh the entire page it works - in an earlier version of vCO (vSphere 4.1) if I changed the previous field the text would auto update, no browser refresh required.

Possibly a similar issue to this post related to a security change in 4.2?   http://communities.vmware.com/message/1849034

Thanks,

David