Principle
There is a principle, the Whole and its Parts. While each Part belongs to the Whole, each Part is not the whole. A Part is not identified by the identity of the Whole.
So what you are trying to do will exceed a problem of logic. Whatever method anyone comes up with is going to be fraught with problems. If you are trying to save on “duplication” (double quotes because it is a perception, not real), by giving values to the Whole, and hoping that the Parts “inherit” the values of the Whole, that will not work: the UML notion of Inheritance by badly broken.
Given that you want the Parts to have (or not have) data values, is it possible for you place that <%UserData X%> in each Part, where it belongs ?
Possible Help
This answer has some detail that may assist in dealing with objects that have multiple text boxes:
Line spacing problems with text
Cheers
