Hi Nick,
Yes, and you don't need script.
First make sure that all of the objects have the same name in the hierarchy, let's say "callNumber". LC Designer will automatically add the instance numbers if more than one object is on the same page. Like, callNumber[0], callNumber[1], etc. But you don't need to worry about this.
Next select one of the objects and go to the Object > Binding palette. There you need to change the binding to Global.
Now no matter what is type in any of the fields, it will appear in all of the others.
Hope that helps,
Niall
Assure Dynamics