When I'm trying to use the condition:

if destination attribute 'Given Name' not equal 'xxx'

and I choose the button next to the "Value" box, the browser that pops up
is an Object Selector, which wants me to pick an object from the Vault.
Can someone elaborate on why that is useful? Why am I not given the same
argument builder that appears in the "set destination attribute value"?

Thanks for any assistance.