I assume you are talking about the properties. Set the properties you can, then set the variable ones in code, with the LiteTween Actions.
Hehe you are right! I discovered how to do this..
The behavior have the action 'create/initialize tween', that is what I always use, along with the 'start' action.
The problem is that inside this 'create' action, you can't enter variables or expression on the target box.. you have to create a separeted target action.
Why? I really don't know hehe